App Tutorial & Features

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How many songs are available in the app’s music library?

Our music library is continuously updated with new songs by talented arrangers who frequently upload and share their work with the community. Furthermore, we have completed integration with Musicboxmaniacs.com (MBM), the largest music box community, expanding our library to nearly 50,000 songs. You can freely browse, search, and add songs to your playlists from this vast collection. Additionally, we offer official songs for your default listening (30 songs for N20; 15 songs for N40).

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Play Music

(For a complete illustrated tutorial, please refer to the User Guide – Playing Music)

Muro Box features a cloud music library with tens of thousands of tracks shared by creators. Through the dedicated app, you can effortlessly search and manage a vast selection of tunes. It also acts as a smart remote control for your physical music box, allowing you to switch between various play modes with ease.


  • Basic Controls: Functions like Play, Pause, Next, Shuffle, and Repeat work just like a standard music player—simple and intuitive.


  • Audio Output Switching: Once the app connects to your music box, you can seamlessly switch your audio source:

    • Play from Music Box: Tap to enjoy the authentic mechanical music produced by real steel tines striking the comb.


    • Play from Phone: Tap to listen and curate playlists directly on your phone—perfect for when your music box isn’t nearby.

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Compose New Melody & Edit Melody Setting

For a complete illustrated guide, please refer to the detailed tutorial on APP composition and settings.

  1. Create a New Composition: On the APP home page, tap the pen and staff icon in the bottom menu to enter “My Creations.” Then tap the “+” icon in the upper right corner and select “Freestyle Composition.”


  2. Song Information Settings:In the composition settings page, you can configure the song photo, track name, description, style, rhythm, tempo, visibility (public/private), and whether comments are allowed. When selecting the range, ensure it corresponds to your Muro Box model (e.g., 20-note or 40-note) so that the notes you compose fall within the playable range of the music box.


  3. Edit Notes:Enter the piano roll composition interface. You can tap directly on the grid squares to add or delete notes (tap again to delete). Press and hold a note to adjust its position.


  4. Save: After completing the note arrangement, tap the settings icon in the upper right corner. You can freely modify the track name, tempo (BPM), and sharing permissions. Finally, press “Save” to finalize your custom composition.
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Does the Muro Box app require a monthly subscription?

No, you don’t. You can consider the Muro Box as an “unlocked” or “one-time purchase” music box.

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Edit Playlist

(For a complete tutorial with images, please refer to the User Guide – Edit Playlist)

With the Muro Box APP, you can easily create and manage personalized song playlists.


  1. Tap the playlist icon on the bottom toolbar to enter “My Playlists,” then tap the “+” icon in the upper right corner. You can name the new playlist, choose a cover image, and set whether it is public.


  2. Add songs to the playlist
    Tap the “+” icon next to a song or at the bottom of the playback page. Select the target playlist from the list, or create a new playlist. After successfully adding a song, the APP will display a notification.
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Schedule Playtime

(Image guide available: Please refer to the User Manual – “Scheduled Playback”.)

Muro Box’s “Scheduled Playback” feature allows you to use your music box like an alarm clock, automatically playing your favorite music at a specified time.


  1. Tap the “gear” icon at the bottom of the App to open “Settings” > “Scheduled Playback”.


  2. Tap the “+” button in the upper-right corner to create a new scheduled playback task.


  3. Set the task name, playback time, date, playlist, and duration, then tap the “✓” button in the upper-right corner to save.


  4. Once the schedule has been created, you can use the toggle switch on the right side of the task list to enable or disable it at any time without creating it again.
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How can I edit my profile information?
  1. Open the Muro Box App.

  2. Tap the circular profile photo icon in the upper left corner to enter the “Personal Information” page.

  3. Tap “Edit Personal Information” to edit your photo, nickname, email, location, website, bio, etc. You can use this area to promote your social media accounts.
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How can I search for songs in the App Song Library?
  1. Open the app and tap the “cloud note” iconat the bottom left to enter the “Music Library.” You can browse popular songs, newly added songs, or explore playlists categorized by themes such as classical, pop, and anime. You can also view the latest MBM tracks, which are synced with the cloud every hour.|


  2. Tap the “magnifying glass” search icon at the top right of the screen, then directly enter the song title, artist, or creator name to quickly find the desired track in the cloud library.


  3. Next to a song, a “20” marker indicates the 20-note musical scale and model, while a “40” marker indicates the 40-note scale and model.
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How many songs can be stored in the offline playlist?

Muro Box has built-in flash memory that can store approximately 1,000 songs. After syncing to the offline playlist, you can play it directly by pressing the knob on the music box without needing to connect to the app.

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How can I edit the offline playlist stored on my Muro Box (the songs played with one-touch playback)?

(For detailed step-by-step instructions with screenshots, please refer to “Edit the Offline Playlist.”)

  1. Add a Single Track Quickly: Select the desired song in the app, tap the “+” or “…” icon on the right, choose “Add Track to My Playlist,” and specify that it should be placed in the “Offline Playlist.”



  2. Import an Entire Playlist: If you already have an online playlist, go to “Playlist,” select that playlist, tap the “…” icon in the top right corner, and select “Replace Offline Playlist with All.”



  3. Update and Reorder Playlist: After editing, unplug the music box and plug it back in. The update is successful when you hear the “second chime” after the startup sound.



  4. You can rearrange the order anytime by long-pressing and dragging tracks in the Offline Playlist within the app, or remove unwanted tracks by tapping the minus icon, keeping your playlist fresh.



  5. Shuffle Playback:If you prefer random playback when offline, ensure the music box is connected to the internet, then go to the gear icon at the bottom of the app, enter “Settings” > “Music Box Settings,” and enable “Shuffle Mode.”
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How can I manage the App notifications I want to receive?
  1. Open the Muro Box App.
  2. Tap the circular profile photo icon in the upper left corner to enter the “Personal Information” page.
  3. Tap “Notification Settings.”

    You can enable or disable each notification according to your needs, including:

    – Someone likes your tune
    – Someone adds your tune to their collection
    – Someone leaves a comment on your tune
    – Your tune ranks among the top 5 popular tunes
    – Someone follows your playlist

The settings will be saved automatically after completion. You can return at any time to adjust your notification preferences.

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How can I turn automatic song title translation in the App Music Library on or off?

Muro Box APP automatically translates song titles based on your phone’s language by default. If you prefer to display the original song titles as set by the author, please follow these steps to disable auto-translation:


  1. Access Personal Settings: Tap your profile icon (circular avatar) in the upper-left corner of the APP screen to enter the Personal Settings page, then tap “Translation.”


  2. Toggle the “Auto-translate” switch to off.

Arrangement Resources & MIDI Guide

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Range and tempo limitations for music box arrangements
  1. File Format and Track Length Restrictions
    • File Format: Only single-track MIDI files are supported; other music formats are not supported.

    • Track Length: When playing via the app, each song is limited to a maximum of 30 minutes (to prevent insufficient storage space on the mobile device). No length restriction applies when playing directly from a computer DAW.

    • Storage Method: During live performance, audio files can be stored in the music box’s internal memory or read via a USB flash drive (for easy on-the-fly adjustments and changes before performances).


  2. Musical Range Restrictions
    • N20 Range: Full notes from C3 to A5, equivalent to the white keys of a piano (excluding semitones/black keys).
    • N40 Range: F2 to A6, excluding F#2, G#2, A#2, and C#3.
      (Middle C = C3 = 261.6 Hz).


  3. Maximum Polyphony
    Refers to the maximum number of notes that can be struck simultaneously:
    • N20 Model: Maximum polyphony of 7 notes.

    • N40 Model: Maximum polyphony of 10 notes.


  4. Playback Speed Limits
    • For Different Pitches: If the melody consists of notes that leap (not repeated same pitch), Muro Box’s playback speed is virtually unlimited. It only takes 0.001 second to process different pitches. Even at an extremely fast tempo of ♩= 375 BPM with 1/64th notes (the smallest unit in the app), Muro Box can still play. Dense chromatic runs like those in “Flight of the Bumblebee” need not worry about missed notes.

    • Repeated Note Limit (Same Pitch): Due to the mechanical return time of the note comb, a single pitch cannot be struck more than five times per second, i.e., a maximum of 300 strikes per minute. When a song’s tempo ♩ ≥ 75 BPM and consecutive sixteenth notes (same pitch) are played, note dropouts may occur. In such cases, it is recommended to delete one of the repeated notes.


  5. Motor Speed Selection
    In the app, tap the gear icon at the bottom right, go to “Settings” > “Music Box Settings” to adjust the motor speed percentage:
    • High Speed: Smoother playback, less timing drift, but louder motor noise.

    • Low Speed: Quieter motor noise, but rhythm stability is more susceptible to melodic variations.


  6. Latency
    • Fixed Latency (~100ms): When playing from a computer DAW, due to the physical structure of the music box, there is a fixed delay of approximately 0.1 seconds from receiving a MIDI signal to actual sound production (equivalent to one sixteenth note at 120 BPM). If playing together with other instruments, it is recommended to send the MIDI signal 100ms earlier (pre-delay) in the sequencing software to align the beat.

    • Motor and clutch mechanics can cause slight torque fluctuations during playback, resulting in a random backward shift of up to 20ms in note timing (similar to a swing feel).

    • Startup Latency: When starting from a stop, the motor requires “warm-up time” to spin up from zero, so sound does not begin immediately. (In MIDI Controller mode, as the motor remains continuously spinning in standby, this latency does not occur.)


  7. Volume and Live Sound Reinforcement Recommendations
    Muro Box’s acoustic output level is comparable to a traditional paper-roll music box, not a large grandfather clock-style music box. If performing together with other instruments or in public settings, it is advisable to use an external microphone to capture the sound and amplify it through speakers to ensure the music box is not masked by other instruments.
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Can I use the compositions I created for the N20 to be played on the N40?

The N40’s range is downward compatible with the 40, 30, 20, and 15 notes music boxes, including the Muro Box-N20. So, any compositions created for the N20, whether by you or other customers, can be directly played on the N40.

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Compose New Melody & Edit Melody Setting

For a complete illustrated guide, please refer to the detailed tutorial on APP composition and settings.

  1. Create a New Composition: On the APP home page, tap the pen and staff icon in the bottom menu to enter “My Creations.” Then tap the “+” icon in the upper right corner and select “Freestyle Composition.”


  2. Song Information Settings:In the composition settings page, you can configure the song photo, track name, description, style, rhythm, tempo, visibility (public/private), and whether comments are allowed. When selecting the range, ensure it corresponds to your Muro Box model (e.g., 20-note or 40-note) so that the notes you compose fall within the playable range of the music box.


  3. Edit Notes:Enter the piano roll composition interface. You can tap directly on the grid squares to add or delete notes (tap again to delete). Press and hold a note to adjust its position.


  4. Save: After completing the note arrangement, tap the settings icon in the upper right corner. You can freely modify the track name, tempo (BPM), and sharing permissions. Finally, press “Save” to finalize your custom composition.
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Import MIDI file from iPhone (from your email)

(For a complete step-by-step tutorial with screenshots, please refer to the detailed guide on importing MIDI from iPhone.)

  1. On your iPhone, open the email containing the MIDI file. Tap the MIDI file attachment below the email body, then tap “Save to Files.” Save it to “Downloads” under “On My iPhone,” tap “Save” in the top-right corner, and exit the Mail app.


  2. Open the Muro Box app. Tap the pen and staff icon in the bottom menu to enter “My Creations,” then tap the “+” icon in the top-right corner. Select “Import MIDI from my phone,” find the MIDI file you just saved, and tap it.


  3. On the arrangement settings page, you can configure: song cover image, song title, description, style, tempo, speed, whether to make it public, and whether to allow comments.


    • The system will automatically apply the tempo embedded in the MIDI file.


    • Note: If the imported melody exceeds the note range of your Muro Box (N20/N40), notes falling outside the range will be automatically ignored.
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Import MIDI File from Android (from your email)

(For a complete step-by-step guide with screenshots, please refer to Detailed Tutorial: Importing MIDI Files on Android)

  1. Download a MIDI File from an Email Attachment
    Open the email containing the MIDI file on your Android phone. Tap the MIDI file attachment below the email body to download and save it to the phone’s built-in “Download” folder. Then exit the email app.


  2. Open the Muro Box App and Import the MIDI File
    Open the Muro Box app, tap the pen and staff notation icon at the bottom to enter “My Creations,” then tap the “+” icon at the top right. Select “Import MIDI from phone,” navigate to “Downloads,” find the MIDI file you just saved, and tap it.


  3. Configure Song Information
    After successful import, you can set the following on the arrangement editing page: song cover image, song title, description, style, tempo, speed, whether to make it public, and whether to allow comments. Once confirmed, save.


    • The system will automatically adopt the tempo embedded in the MIDI file.


    • Please note: If the imported melody exceeds the range of your Muro Box (N20/N40), notes outside the range will be automatically ignored and not played.
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Import MIDI file from Internet

(For a complete illustrated tutorial and detailed steps on importing a file from Google Drive, please refer to Import MIDI from URL – Full Guide)

  1.  Copy the full URL of the MIDI file. Then open the Muro Box APP, tap the “pen and staff” icon in the bottom menu to enter “My Creations” – tap the “+” icon in the upper right corner, and select “Import MIDI from URL.”



  2.  In the pop-up input field, long press and “paste” the URL you just copied, then tap “Confirm.” Once the system successfully retrieves the audio file, a save screen will appear. After the import is complete, you can set the song photo, song name, description, style, tempo, speed, whether to make it public, and whether to allow comments in the arrangement settings page. Confirm the settings are correct and then save.


    • The system will automatically adopt the tempo embedded in the MIDI file.


    • Please note: if the imported melody exceeds the note range of your Muro Box (N20/N40), notes outside the range will be automatically ignored and will not be played.
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How to Export Your Composition from the Muro Box App as a PDF, MIDI, or Paper Tape File?

For a complete step-by-step guide with screenshots, please refer to the Export Guide.

  1. Open the Muro Box App and tap the “pen and staff” icon on the bottom menu. On the right side of the song you wish to export, tap the “three dots” menu button, and select “Export Song.”



  2. Export Format
    – MIDI: Suitable for further editing in other music software.
    – PDF / DXF: These file formats allow you to print the paper strip for hand-punching on traditional punched-paper music boxes.



  3. After selecting the desired file format, tap “Confirm Export.”


  4. Please note:
    • If you composed a 20-note melody using the Muro Box App, select PDF – Grand Illusion 20 when exporting. Its musical scale range matches that of the Muro Box N20.


    • If you composed a 40-note melody, please note that there is currently no paper strip that fully supports the 40-note range. The closest available option is Grand Illusion 30 . After export, any notes beyond the 30-note range will not be printed on the paper strip.
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Bluetooth(BLE) Pairing the MIDI Input Device with the Muro Box (Android Users)

(For a complete illustrated tutorial, please refer to the Android Bluetooth MIDI input device pairing guide.)

Please note: Muro Box supports BLE MIDI starting from firmware version 1.2. Also note that your phone must have a special app installed to enable BLE MIDI.

  1. Download and install the “Piano MIDI Bluetooth” app from Google Play.


  2. Open the app, and tap the Bluetooth icon on the top toolbar.


  3.  Select “Start scan”. Make sure location services are enabled on your phone so that Bluetooth can discover the Muro Box. If the music box is found, the option “MUROBOX-MIDI” will appear. In the “Select MIDI mode” menu, choose “Controller” and press OK.


  4. Play notes on the on-screen keyboard, and the music box will start playing.
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Bluetooth(BLE) Pairing the MIDI Input Device with the Muro Box (iOS Users)

(For complete illustrated instructions, please refer to “Pairing the MIDI Input Device with the Muro Box via Bluetooth for iPhone Users“)

Please note: Muro Box supports BLE MIDI starting from firmware version 1.2 or later. Also note that your phone must have a special app installed to support BLE MIDI.


  1. Search for and install the “MIDI Recorder with E. Piano” app from the App Store.


  2. Open the app and tap the Bluetooth icon on the bottom toolbar.


  3. Select MIDI mode. If the music box is detected, the option “MUROBOX-MIDI” will appear. Tap and hold it for a few seconds; once the status shows “Connected,” the connection to the music box is established.


  4. Tap “Record” on the bottom toolbar. Play notes on the keyboard displayed on the screen, and the music box will start playing in real time.
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Muro Box (Music Box) Connects with Other Devices via MIDI Input Slot

(For complete illustrated instructions, please refer to the Muro Box Programmable Music Box MIDI Input User Guide)

 

  • Computer DAW Software (USB-C / DIN 5)


    1. Use a USB-C cable to connect the computer to the Muro Box.


    2. In the DAW software, select Muro Box as the MIDI Output device.


    3. Note: The N40 also supports DIN 5 MIDI cables; the corresponding switch must be activated.


  • MIDI Keyboard / MIDI Instrument (Real-time Performance)


    1. Connect the MIDI keyboard to the Muro Box via USB-C or DIN 5.


    2. Once powered on, you can play the music box directly.


    3. Mobile Devices or Wireless Devices (BLE MIDI)




  • Pairing via Apps or Devices That Support BLE MIDI


    1. After a successful connection, MIDI signals can be transmitted wirelessly to control playback.


    2. Recommended Apps:
      • iPhone: MIDI Recorder with E.Piano


      • Android: Piano MIDI Bluetooth USB



  • The Muro Box supports standard MIDI input, making it compatible with most DAW software and MIDI devices, allowing greater freedom in composition and performance.
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How to Adapt My Favorite Sheet Music/MIDI File into a Playable Version for the Muro Box (Programmable Music Box)?

Since the music box has physical range limitations, MIDI files downloaded from the internet often require fine-tuning. If you have basic sheet music reading skills, you can try editing them yourself!

Please read the [Complete Guide to Adjusting MIDI Files for the Muro Box Music Box]. This article demonstrates how to edit MIDI files using the free MuseScore software to adjust pitch range and rhythm, so the result can be played on the Muro Box music box.

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Listen to or Import Songs from Music Box Maniacs (MBM) in the Muro Box App

(For a complete illustrated tutorial and detailed steps , please refer to Listen to or Import Songs from Music Box Maniacs (MBM) in the Muro Box App)

  1. On your computer, visit the MBM website (Music Box Maniacs).


  2. Click “Explore” at the top, then select songs that match the note range of the N40 or N20 from the “All-types” dropdown menu. The number indicates the note range: the N40 can play songs with up to 40 notes, and the N20 can play songs with up to 20 notes. Filter for songs that fit your music box’s range, then click into the song page.


  3. Click “Export” in the upper-right corner of the song, then select “Muro Box.” A QR code for the song will appear on the screen.


  4. Open the Muro Box app, tap the “pen and staff” icon in the bottom menu to enter “My Compositions,” tap the “+” icon in the upper-right corner, then select “QR code” to scan the computer screen.


  5. Configure song information: After successful import, you can set the song photo, title, description, genre, rhythm, tempo, visibility (public/private), and whether comments are allowed in the arrangement settings page. Confirm and save.
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Import MIDI File with “Share File” from any App

(For a complete step-by-step guide with screenshots, please refer to Importing MIDI via File Sharing.)

  1. Open the communication app or any application on your phone where the MIDI file is stored. Tap the file to open it, then tap the system’s built-in “Share” or “Open in another app” icon (usually a square with an upward arrow or a share link symbol).


  2.  In the share menu that appears, tap the “Muro Box” icon. Your phone will switch to the Muro Box app and display an import window. Confirm your song details, then tap “Save” to complete the import.
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Which MIDI keyboards do you recommend for use with Muro Box?
  • A MIDI keyboard controller looks similar to an electronic keyboard but does not produce sound on its own. It must be connected to a Muro Box or another sound source device. Any controller that supports MIDI functionality is generally compatible with the Muro Box.


  • Choose based on the number of keys:
    • 32 keys: Suitable for entering melodies and portability. Covers nearly the entire N20 range (missing only the highest note). If a note goes out of range during playing, use the octave shift buttons to adjust the range.


    • 49 keys: Fully covers both the N20 and N40 range. If you intend to play with both hands simultaneously, a 49-key or larger controller is recommended.


    • 61 keys: Commonly used in arrangement work. If you also create music with software like Logic Pro or Cubase, consider this size.


  • This is the MIDI keyboard (61 keys) we use in our office for testing music boxes. Reference link:https://24h.pchome.com.tw/prod/DMAFCT-A9008EH6K
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How can I record the best sound from my Muro Box?
  1. Keep the microphone at a distance (avoid contact recording): Placing the microphone directly against the wooden casing amplifies motor noise. It is recommended to use an external microphone and maintain an appropriate distance to fully capture the room’s natural reverberation.
    For reference, please see the official sound quality comparison video:
    https://www.youtube.com/watch?v=y50cW11zRPY


  2. Lightweight equipment and simple post-processing:


    Lavalier microphone:     Position a small microphone (e.g., Boya Lav) in front of the sound hole, and apply noise reduction plugins (e.g., Brufsi) during post-processing to reduce mechanical noise. Musician Shwan’s test:
    https://www.youtube.com/watch?v=bRDALSQmCfo



    Handheld recorder:     Use a portable recorder (e.g., Zoom H2) for audio capture, then apply noise reduction software and EQ adjustments during post-processing to minimize motor noise. Musician Christophe’s test:
    https://www.youtube.com/watch?v=kGFHOOBNx6k

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Can the motor noise of the music box be reduced?

The motor of the music box does produce some noise. However, every unit undergoes a full functional inspection before shipping, including checks for unwanted sounds, so all units meet our shipping standards. Regrettably, the motor noise cannot be completely eliminated.

Motor noise is indeed one of the current challenges for Muro Box. At present, the only way to reduce motor noise is to lower the motor speed through the app. The default factory setting is 85% speed. When the speed is reduced, the motor noise also decreases, but the rhythm of the music may become slightly unstable, giving it a “swing-like” feeling. Therefore, adjustments must be made based on actual usage.

The mechanical design of the N20/N40 music boxes has already reached its current structural limit. Although the motor sound can be heard, during playback it is not as prominent behind the melody. This is also part of the unique characteristic of a mechanical music box being “alive.”

Device Connection (App & MIDI Setup)

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How can I download the Muro Box App for free?

Click the button below to download the App, or search for “Muro Box App” on the App Store or Google Play. After installation, create an account and follow the on-screen instructions to complete your music box connection setup. Once connected, you’re ready to start using Muro Box.

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How to set up an account?

(For a complete illustrated tutorial, please refer to the detailed account setup guide.)

  1. .First, download and open the Muro Box app from the App Store or Google Play.



  2. After opening the app, you will see four login options: “Sign in with Apple,” “Sign in with Google,” “Sign in with Facebook,” and “Sign in with Email.” Please select your preferred method.


    *If you have previously logged in with a specific social account, please use the same account to sync your saved playlists and personal data.



  3. If you choose to create an account using Email, enter the password you wish to set and tap “Create Account.” The system will then send a verification code to your email. Check your inbox and enter the 4-digit verification code in the app.


  4. After selecting your preferred login method, the Terms of Service and Privacy Policy will appear. Agree to them and confirm. The system will automatically create your app account and log you in, allowing you to start exploring the rich music library immediately.
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How to Connect Muro Box with Wi-Fi (iOS Users)?

(For a complete tutorial with images, please refer to the official guide: Muro Box Official Website: iOS APP Wi-Fi Connection Detailed Tutorial)

  1. First, ensure that Bluetooth and Wi-Fi are enabled on your iPhone, and that the Muro Box is connected to power.


  2. Open the Muro Box app, tap the gear icon in the bottom right corner to enter “Muro Box Settings”, then tap “My Muro Box” -> “Connection Settings”.
    ⚠️ If your iPhone prompts for “Local Network” or “Bluetooth” permissions during the first connection, be sure to tap “Allow” or “OK” to prevent the app from failing to scan the Muro Box.


  3.  Plug in the Muro Box and press and hold the control knob for 10 seconds. After hearing a ding-dong sound, tap “Next” on your phone. The app will automatically scan and successfully connect to the Muro Box.


  4. Tap “Next”, select your Wi-Fi network from the list (only 2.4GHz is supported), enter the password, and tap “Connect”. Your phone will show the progress; please wait about 30 seconds. When the Muro Box chimes and the app displays that the connection is complete, tap “Go to Music Library” to start playing songs!

⚠️ When the firmware version is lower than 0.1.34, please refer to the webpage.

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How to Connect Muro Box with Wi-Fi ( Android Users)?

(For a complete step-by-step guide with screenshots, please refer to the official Muro Box instruction page: Muro Box Official Website: Detailed Guide for Connecting Android APP to Wi-Fi)

  1. Ensure that your Android phone has Bluetooth and Wi-Fi enabled, and that the Muro Box is connected to a power source.


  2. Open the app, tap the gear icon in the lower right corner to enter “Muro Box Settings,” then sequentially tap “My Muro Box” and “Connection Settings.”
    *Note: If the Android system prompts for permissions such as “Location,” “Nearby Devices,” or “Bluetooth,” be sure to select “Allow” or “Allow only while using the app.” Otherwise, the app may fail to scan and detect the Muro Box.


  3. Plug in the power cord of the Muro Box and press the control knob for 10 seconds. Upon hearing the ding-dong sound, tap “Next” on your phone. The app will automatically scan and successfully connect to the Muro Box. After the connection is complete, tap “Next.”


  4. On the “Set Muro Box Network” screen, tap the name of the Wi-Fi network you wish to connect to (please select an SSID that uses the 2.4GHz frequency band). Then enter your Wi-Fi password and tap “Connect.” The phone screen will show the progress, and you will need to wait approximately 30 seconds. When the Muro Box plays a confirmation sound and the app displays “Connection Complete,” tap “Go to Music Library” to start playing songs!

*If the firmware version is lower than 0.1.34, please refer to the official webpage.

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Using iPhone hotspot to share Internet for Muro Box to connect

⚠️ Important Reminder:
The hotspot feature on iOS devices tends to turn off automatically very easily. While it is technically possible to use, the experience is poor for most users. Therefore, we do not recommend general users to rely on the iOS hotspot. (The key issue with iOS hotspot sharing is that it often turns off too early—before the music box can connect. Therefore, the key is to keep the hotspot active long enough.)

For the complete step-by-step instructions, please refer directly to the detailed tutorial on iPhone hotspot connection. The process outlined on that page has been tested and confirmed to work. If you have any questions, please contact our customer support: support@tevofy.com.

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Using Android hotspot to share Internet for Muro Box to connect

For a complete tutorial with screenshots, please refer to the official guide: Muro Box Official Website: Detailed Android Hotspot Connection Tutorial

  1. Open the Muro Box app, tap the icon in the bottom right corner to enter “Muro Box Settings,” then sequentially tap “My Muro Box” and “Connection Settings.”
    ⚠️ Android Configuration Key Tip: Hotspot frequency limitation: Muro Box only supports the 2.4 GHz frequency band. Android users must ensure the network band is set to 2.4 GHz; otherwise, the music box will not be able to detect the hotspot.

    At this point, plug in the Muro Box power cord and press and hold the control knob for 10 seconds. After you hear a ding-dong sound, tap “Next” on your phone. The app will automatically scan and successfully connect to the Muro Box. Once done, tap “Next.”


  2. On the “Set Muro Box Network” screen, scroll to the bottom and tap “Add Network.” Enter your phone’s hotspot name, select the security type (typically WPA2/PSK), then enter the hotspot password and tap “Connect.” While Muro Box is reconnecting, go to your phone’s settings and turn on the personal hotspot. Your phone screen will show the progress; please wait approximately 30 seconds. When Muro Box plays a short melody and the app screen indicates that the connection is complete, tap “Go to Library” to start playing music.

＊If the firmware version is lower than 0.1.34, please refer to the webpage.

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Switch the App-Control to Another Muro Box

(For a complete illustrated tutorial, please refer to the detailed guide on switching connections between multiple Muro Box units.)

  1. First, ensure that all your music boxes have completed the connection setup and are powered on.



  2. Open the APP, tap the gear icon in the lower right corner to enter “Muro Box Settings”, then select “My Muro Box”.



  3. In the list, you can see all bound music box serial numbers. Please confirm that the music box you wish to switch to is powered on and has a stable connection.



  4. On the list screen, directly tap the serial number of the Muro Box you wish to control at that moment. The system will immediately switch control, and a checkmark will appear next to the device name, allowing you to easily manage multiple devices.


  5. You can also see a “pen” icon next to the music box name. Tap it to edit the name. You can change it to any name you prefer, for example: “My N20 Music Box”.
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What should I do if the App can’t connect to my Muro Box?

First, ensure the music box is properly powered on. If you have recently changed your Wi-Fi password, router, or moved the music box to a different location, please re-pair and reconnect the music box in the App. When the App displays “Cannot connect to server,” try tapping the play button or switching tracks to automatically restore the connection, and confirm that your phone’s network connection is stable. If error messages frequently appear, it is usually due to version incompatibility—please update the Muro Box App to the latest version.

If the issue persists, directly tap the gear icon in the bottom-right corner of the Muro Box App toolbar, select “Report a Problem,” and fill out the form. The system will automatically include your device model and serial number to facilitate efficient troubleshooting by our engineers. If the App cannot be opened, you may seek official assistance via the official problem report form or by emailing support@tevofy.com.

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How can I update the firmware of my Muro Box?
  1. Ensure that Bluetooth is enabled on your phone and that your Muro Box is connected to a stable Wi-Fi network.
  2. Open the Muro Box App, tap the gear icon in the lower right corner of the toolbar , then select “Music Box Settings” > “Firmware Update.” If a new firmware version is available, the system will display an update prompt.
  3. Start the upgrade: After tapping “Update Firmware,” the music box will automatically begin downloading and installing the update.

⚠️ Please note:

  • Do not disconnect power: During the update process (which typically takes only a few minutes), do not unplug the power cord or turn off the music box, as this may cause damage to the system.
  • Maintain network stability: Ensure that the Wi-Fi signal for your music box is stable to avoid download interruptions.
  • Retry and report issues: If the update success message does not appear after more than five minutes, unplug and replug the power cord and try updating again. If the issue persists after multiple attempts, please contact us via the problem report feature.
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Can multiple people connect to the same Muro Box?

Yes! One Muro Box can be linked to multiple accounts at the same time, allowing family and friends to share the same music box.

  • How to add a new linked account?
    1. Install the Muro Box App on a new phone or tablet.
    2. Log in to the Muro Box account you want to link.
    3. Follow the in-app instructions to complete pairing with the Muro Box. (Refer to the video for guidance.)
    4. After pairing is complete, you can use the App to control the same Muro Box.
  • How to view or remove linked accounts?
    1. Open the App.
    2. Tap the gear icon in the lower-right corner to enter “Settings” > tap “My Muro Box”.
    3. Select “Linked Accounts” to view the currently connected accounts.
    4. To remove an account, tap the “–” on the right side of the account to unlink it.
  • After multiple users are connected, each user can jointly edit the offline playlist, set their own scheduled playback, and remotely control the same Muro Box through the App. Whether it’s sharing with the whole family, interacting with a partner, or creating a surprise by playing a song remotely on a birthday or anniversary, it can be easily achieved.

Find & Preview Songs

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How can I find the song I’m looking for?

You can find or obtain the song you want on Muro Box through the following methods:

  1. Online Repertoire Search: Enter the song name and artist directly in the Muro Box app or on the official website to freely search among thousands of tracks shared by players and arrangers worldwide.



  2. Import from the Music Box Community: Search on the world’s largest music box score website, MBM (Music Box Maniacs). Once found, you can import it directly into Muro Box for playback via the app at no cost.


  3. CustomArrangement Service: If the song is not available on the platforms above, you can provide a YouTube link or audio file and purchase the official custom arrangement service, where professional arrangers will tailor the piece for you.

⮕ For a more detailed tutorial on exploring the repertoire library and the custom arrangement process, please refer to: Muro Box Custom Music Box Gift Guide.

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How many songs are available in the app’s music library?

Our music library is continuously updated with new songs by talented arrangers who frequently upload and share their work with the community. Furthermore, we have completed integration with Musicboxmaniacs.com (MBM), the largest music box community, expanding our library to nearly 50,000 songs. You can freely browse, search, and add songs to your playlists from this vast collection. Additionally, we offer official songs for your default listening (30 songs for N20; 15 songs for N40).

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How can I compare the sound of different Muro Box models?

Click the video below to hear the same song performed on all three Muro Box models. Compare their tone, resonance, sustain, and overall playing characteristics to find the sound you like best.

0:00 N40 Sublime | 1:07 N40 Standard | 2:15 N20 Standard

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How can I download the Muro Box App for free?

Click the button below to download the App, or search for “Muro Box App” on the App Store or Google Play. After installation, create an account and follow the on-screen instructions to complete your music box connection setup. Once connected, you’re ready to start using Muro Box.

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Download_on_the_App_Store_Badge_US
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How to set up an account?

(For a complete illustrated tutorial, please refer to the detailed account setup guide.)

  1. .First, download and open the Muro Box app from the App Store or Google Play.



  2. After opening the app, you will see four login options: “Sign in with Apple,” “Sign in with Google,” “Sign in with Facebook,” and “Sign in with Email.” Please select your preferred method.


    *If you have previously logged in with a specific social account, please use the same account to sync your saved playlists and personal data.



  3. If you choose to create an account using Email, enter the password you wish to set and tap “Create Account.” The system will then send a verification code to your email. Check your inbox and enter the 4-digit verification code in the app.


  4. After selecting your preferred login method, the Terms of Service and Privacy Policy will appear. Agree to them and confirm. The system will automatically create your app account and log you in, allowing you to start exploring the rich music library immediately.
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How can I search for songs in the App Song Library?
  1. Open the app and tap the “cloud note” iconat the bottom left to enter the “Music Library.” You can browse popular songs, newly added songs, or explore playlists categorized by themes such as classical, pop, and anime. You can also view the latest MBM tracks, which are synced with the cloud every hour.|


  2. Tap the “magnifying glass” search icon at the top right of the screen, then directly enter the song title, artist, or creator name to quickly find the desired track in the cloud library.


  3. Next to a song, a “20” marker indicates the 20-note musical scale and model, while a “40” marker indicates the 40-note scale and model.
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How can I tell whether a song can be played on the N20 or the N40?

In the online music library on the official website or within the app, each song clearly indicates its note range (e.g., 15, 20, 30, or 40 notes). If you have an existing song and want to determine which series is suitable, please refer to the following:

  • N20 Series: Suitable for general pop songs that do not require accidentals (i.e., the white keys on a piano).


  • N40 Series: If the song includes chromatic notes (i.e., the black keys on a piano)—for example, songs in minor keys, certain classical pieces, or film scores—then the N40, which spans nearly four octaves, is required.


  • You can directly fill out the form to contact us. Our professional arrangers will evaluate your song and reply with a recommended model.

Gift & Customization Guide

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How can I find the song I’m looking for?

You can find or obtain the song you want on Muro Box through the following methods:

  1. Online Repertoire Search: Enter the song name and artist directly in the Muro Box app or on the official website to freely search among thousands of tracks shared by players and arrangers worldwide.



  2. Import from the Music Box Community: Search on the world’s largest music box score website, MBM (Music Box Maniacs). Once found, you can import it directly into Muro Box for playback via the app at no cost.


  3. CustomArrangement Service: If the song is not available on the platforms above, you can provide a YouTube link or audio file and purchase the official custom arrangement service, where professional arrangers will tailor the piece for you.

⮕ For a more detailed tutorial on exploring the repertoire library and the custom arrangement process, please refer to: Muro Box Custom Music Box Gift Guide.

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Customized Arrangement Production Process

If you have purchased a customized arrangement along with your order, we will send you a form after receiving your order. Please fill in the song details, including song information, reference links, the specific two-minute segment you would like customized, and any playlist or song images, etc.

▸ Customized Arrangement Form

  • Full-Length Arrangement: If you require a full-length arrangement, our arranger will evaluate the additional cost and confirm the fee with you via email separately.


  • After each arrangement is completed, the arranger will provide an MP3 audio file simulating the music box timbre for your preview and approval. You will have two opportunities to request minor adjustments free of charge before final approval.


  • Once the arrangement is approved, our engineer will upload and bind the final audio file and customized image to the music box, allowing you or the recipient to simply power on the music box and press the knob to play the specified song directly.
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How to confirm the content of customized laser engraving?

If you have purchased a customized laser engraving service along with your order, we will send you a dedicated form after receiving your order. The form will include detailed engraving dimensions, recommended fonts, sample images, and examples for your reference.

▸ N40 Metal Nameplate Laser Engraving Form


▸ N20 Metal Nameplate Laser Engraving Form

After we receive the text or image files you submit, our designer will first create a “laser engraving preview” for your approval. The engraving process will begin only after you confirm your satisfaction.

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What is the upload custom playlist service?

We offer a service to upload a custom playlist to your music box before shipment. Simply browse our free App music library, select 1 to 10 songs, and arrange them in your preferred playback order. Your music box will be pre-configured to play this playlist when it arrives.

If you purchase this service, we will upload your selected playlist to the music box before shipping. When the recipient receives the music box, they can simply plug it in and press the button to start playing your custom playlist—no additional setup required.

▸ Upload Custom Playlist Form

Note:

  • This service is available once per music box. You may select up to 10 songs from the App music library and arrange them in any order.


  • If this service is not purchased, the music box will still come with a default playlist of official songs (N20: 30 songs / N40: 15 songs).
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How can I submit a custom arrangement request if I can’t find the song I want in the Song Library?
  1. After receiving your order, we will contact you via email to fill out the song request form.



  2. Initial evaluation: The music arranger will assess whether the song is suitable for performance on the music box. If it is not suitable, we will suggest you choose another song before production begins.



  3. Once we receive the completed song request form, we will forward it to the arranger to schedule the arrangement. The arranger will strive to preserve the melody and rhythm of the original song as much as possible while leveraging the music box’s strengths, using techniques such as transposition and adapted accompaniment to condense the essence of the song within the music box’s range.



  4. After the arranger finishes the arrangement, we will email you an audio file for review and approval, with the opportunity for up to two rounds of minor adjustments. If more than two revisions are needed, or if substantial changes are required, we will discuss additional revision fees with you based on the situation.



  5. Once you approve the final version, we will upload the song to your undelivered Muro Box and have the arranger test it to confirm the upload is correct. When you receive your music box, simply plug it in and press the knob, and it will start playing your chosen song!


  6. We will also provide the MIDI file of the song for your future use, allowing you to modify the arrangement or use it on other devices.

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Can the recipient continue editing the playlist I created?

To ensure the sentiments you wish to convey remain with the music box for years to come, the customized arrangement or song list you ordered will be directly bound by our engineers as a “read-only dedicated playlist” on the device, preventing the recipient from accidentally deleting your heartfelt message.

If the recipient later wishes to add or modify tracks, they can simply use the “Create Your Own Online Playlist” feature within the app, with no limits on the number or length of songs. This not only preserves your original intention in its entirety but also allows the recipient to freely expand their personal music collection.

Hardware Maintenance & Troubleshooting

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Warranty Service

The one-year warranty and three-year limited repair service for this product are only available to customers who purchase through our company or designated partners.

One-Year Limited Warranty: Starting from the date of shipment, this covers defects in materials or assembly but excludes other accessories and damage caused by improper use by the consumer.

Three-Year Limited Repair Service: Shipping and repair costs will be calculated based on the actual situation.

Please Note: The warranty will be void if you open the Muro Box yourself. If repairs or inspections are needed, do not open the device yourself. Please return it to us to check if the issue is covered under the warranty.

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What are the power specifications, dimensions, and weight of the music box?

Muro Box product specifications are as follows:

Power Adapter
Output Voltage: 15V
Rated Current: 3A
Rated Power: 45W
Input Voltage: 90~264VAC
Frequency Range: 47~63Hz
AC Current (Typ.): 1A/115VAC ; 0.5A/230VAC

Muro Box-N20 Standard
Operating Voltage: 15V
Operating Current: 2.5A
Product Dimensions (mm): 135(L) x 135(W) x 105(H)
Weight: 1.0 kg

Muro Box-N40 Standard
Operating Voltage: 15V
Operating Current: 3A
Product Dimensions (mm): 250(L) x 160(W) x 95(H)
Weight: 2.3 kg

Muro Box-N40 Sublime
Operating Voltage: 15V
Operating Current: 3A
Product Dimensions (mm): 250(L) x 160(W) x 95(H)
Weight: 4 kg

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How to report an issue?
  1. In-App “Report an Issue” (Recommended): Open the Muro Box app, tap the gear icon in the bottom-right corner , then select “Report an Issue” to fill out the form. The system will automatically include your device OS version and product serial number, allowing the engineering team to quickly and precisely identify and resolve any issues.

     

  2. Official Email: For non-technical inquiries, feel free to write to our customer service email at: support@tevofy.com

     

  3. Social Media Customer Service :
    – Facebook Fan Page
    – WhatsApp
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Why doesn’t the music box have a built-in battery?

Due to the complexity of battery transportation safety regulations, we decided from the very beginning of the design process not to include a battery, allowing the music box to be shipped to as many countries as possible.

If you need to use the music box on the go, the N20 Standard, N40 Standard, and N40 Sublime all support USB-C power banks, allowing you to easily take the music box anywhere you go.

Compatible power bank specifications: Minimum of 45W USB-C power supply. Please use a model that supports 15V voltage and at least 3A current (45W 15V/3A).

For example, the following power bank is one of the models we used in internal testing: 

https://www.mi.com/global/product/mi-50w-power-bank-20000/

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How long can the music box play continuously?

Due to hardware limitations, continuous playback is capped at a maximum of 3 hours. After 3 hours, the playback speed will be reduced to prevent the device from overheating. If you need extended playback, we recommend setting up scheduled playlist playback, with a 30-minute interval between the start times of each playlist to protect the components from excessive wear. You are welcome to review the instructions for setting up scheduled playlist playback.

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Can I purchase the Muro Box movement separately and assemble it myself?

To ensure optimal sound quality and stability, we do not recommend assembling the mechanical movement yourself.

Minor errors during assembly can affect resonance or damage delicate components. If you are willing to accept the risks and wish to purchase a DIY movement kit, please email your intended use to: support@tevofy.com.

For a perfect hands-on experience, we highly recommend our “DIY Cylinder Assembly Course”!

Purchase the course in our store and book a visit to our Taipei office. You will receive 1-on-1 guidance directly from the Muro Box founders, allowing you to build your own music box and explore our patented design safely.

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What should I do if the App can’t connect to my Muro Box?

First, ensure the music box is properly powered on. If you have recently changed your Wi-Fi password, router, or moved the music box to a different location, please re-pair and reconnect the music box in the App. When the App displays “Cannot connect to server,” try tapping the play button or switching tracks to automatically restore the connection, and confirm that your phone’s network connection is stable. If error messages frequently appear, it is usually due to version incompatibility—please update the Muro Box App to the latest version.

If the issue persists, directly tap the gear icon in the bottom-right corner of the Muro Box App toolbar, select “Report a Problem,” and fill out the form. The system will automatically include your device model and serial number to facilitate efficient troubleshooting by our engineers. If the App cannot be opened, you may seek official assistance via the official problem report form or by emailing support@tevofy.com.

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Can it be powered by a portable power bank? Which one is recommended?

Both the N20 Standard, N40 Standard, and N40 Sublime use USB-PD and can be powered by a portable power bank, allowing you to take your Muro Box wherever you go.
(Note: The N20 Lite uses a traditional DC power supply and does not support this external power bank functionality.)

Compatible power bank specifications: Minimum of 45W USB-C power supply. Please use a model rated for 15V voltage and at least 3A current (45W 15V/3A).

For example, the following power bank model is one we have used in our internal testing: https://www.mi.com/tw/20000mAh-mi-power-bank-3-pro/specs/

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How can I update the firmware of my Muro Box?
  1. Ensure that Bluetooth is enabled on your phone and that your Muro Box is connected to a stable Wi-Fi network.
  2. Open the Muro Box App, tap the gear icon in the lower right corner of the toolbar , then select “Music Box Settings” > “Firmware Update.” If a new firmware version is available, the system will display an update prompt.
  3. Start the upgrade: After tapping “Update Firmware,” the music box will automatically begin downloading and installing the update.

⚠️ Please note:

  • Do not disconnect power: During the update process (which typically takes only a few minutes), do not unplug the power cord or turn off the music box, as this may cause damage to the system.
  • Maintain network stability: Ensure that the Wi-Fi signal for your music box is stable to avoid download interruptions.
  • Retry and report issues: If the update success message does not appear after more than five minutes, unplug and replug the power cord and try updating again. If the issue persists after multiple attempts, please contact us via the problem report feature.
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How can I restore my Muro Box to its factory default settings?

Regardless of whether you are using the N20 or N40 series, the physical button reset procedure is the same.


  1. Find a soft cloth to put on a table before you put the Muro Box upside down. This soft cloth should protect the lid of the Muro Box from being scratched by accident.


  2. Find something tiny and hard like a needle so that you can insert it to the reset hole for resetting the Muro Box to its factory check mode.
    【Regarding the location of the reset hole: Please turn the music box over. You will see a small, circular hole (approximately 2 mm in diameter) in the center of the base. This is where the reset button is located. 】


  3. Push the reset spot with the needle in the unpowered Muro Box. Hold this needle in the reset hole and then connect the power cord of the Muro Box and continue holding this needle for 5 seconds.


  4. Remove the needle from the reset hole. Wait for the short default melody playing by the Muro Box to tell you the rest step is completed.
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Which parts have a shorter lifespan, and how long do they typically last?

Muro Box’s mechanical components, including the comb, solenoids, and gears, are designed for long-term durability and have undergone rigorous endurance testing. Under normal use and proper environmental conditions, there are no components that are expected to fail regularly or require routine replacement.

The lifespan of the following parts may be affected by usage habits and environmental conditions:


  1. Power adapter and USB-C cable: Please use a USB-C PD power adapter rated at 45W or higher to ensure stable operation of the music box.


  2. Wooden enclosure: Although it is not a consumable part, natural wood is sensitive to sudden changes in temperature and humidity, which may cause warping. For example, avoid moving the music box directly from a snowy outdoor environment into a warm indoor space, or placing it in an extremely dry environment near a heater.


  3. To protect the internal components and motor, Muro Box automatically reduces its playback speed after 3 hours of continuous operation. We also provide a 1-year warranty and 3-year repair service. Please do not disassemble the music box yourself.
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Can the motor noise of the music box be reduced?

The motor of the music box does produce some noise. However, every unit undergoes a full functional inspection before shipping, including checks for unwanted sounds, so all units meet our shipping standards. Regrettably, the motor noise cannot be completely eliminated.

Motor noise is indeed one of the current challenges for Muro Box. At present, the only way to reduce motor noise is to lower the motor speed through the app. The default factory setting is 85% speed. When the speed is reduced, the motor noise also decreases, but the rhythm of the music may become slightly unstable, giving it a “swing-like” feeling. Therefore, adjustments must be made based on actual usage.

The mechanical design of the N20/N40 music boxes has already reached its current structural limit. Although the motor sound can be heard, during playback it is not as prominent behind the melody. This is also part of the unique characteristic of a mechanical music box being “alive.”

Orders, Payments & Shipping

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How to Purchase a Muro Box?

For individual customers, please visit our official online store to place your order directly.

If you would like to discuss B2B sales cooperation with us, please contact us via the online form. In your message, please describe the main characteristics of your target customers, how you plan to introduce and distribute Muro Box products through your sales channels, and whether you can provide local customer support.

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How long will it take to ship?

Shipping Time for Orders on Our Official Website: shipping is within 7 business days. For rush orders, please confirm with customer service first.

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How to estimate import duties when shipping from Taiwan to overseas?

We will use the website provided by DHL to estimate the local import duties based on the product price. If you need assistance with the estimation, please email us at support@tevofy.com.

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Can I pay by credit card or in installments?

We offer secure and convenient online payment methods:

Credit Card Payment (International Cards Accepted): Our official website fully supports major global credit cards (e.g., VISA, MasterCard, JCB) for one-time full payment.

Installment Payment: The official website currently does not directly provide online installment services. If you require installment payments, we recommend contacting your credit card issuer after completing the transaction to apply for “statement installment” or “single transaction installment” for that purchase.

Foreign Currency Payment Notice: For international customers using non-NTD cards on our website, the payment will be settled by the bank at the real-time exchange rate, and your issuing bank will charge an overseas transaction fee.

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Return Policy and Terms

  • Scope: This return policy applies to Muro Box brand music box products purchased through the Muro Box official website (www.murobox.com) or other platforms from Tevofy Technology Ltd. or authorized distributors.

     

  • Return Conditions:

    • The product must be in new or like-new condition, with no visible damage or stains.

       

    • All original accessories must be returned in full.

       

    • Customers must submit a return request within 14 days of receiving the product to qualify for a full refund.

       

  • If the product shows obvious signs of use, missing components, or damage, returns or refunds will not be accepted.

     

  • Return Process:

    • Please contact Tevofy Technology Ltd. customer service team at support@tevofy.com and provide your original order number for identification.

       

    • If necessary, we may ask you to provide additional purchase information to verify your return request.

       

    • We will provide you with a return address in your region (a freight forwarding warehouse or authorized distributor office).

       

    • Please return the product in its original packaging and include the following:

      – A copy of the invoice

      – A note explaining the reason for return

      – Contact information (email and phone number)

       

  • Refund Policy:

    • After the product is confirmed received, we will notify you via the email you provided.

       

    • The refund amount will be calculated after deducting taxes, shipping costs, customization service fees, and processing fees, and will be returned to the original payment method.

       

    • Once the refund is processed, we will notify you via email or other online means.

Pre-purchase FAQs

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Traditional Music Box vs. Muro Box Programmable Music Box

Traditional Music Box: Dedicated to the singular, classic listening ritual

The traditional music box is the epitome of pure mechanical craftsmanship, focusing on performing an excerpt of a single specific piece.

Muro Box: Capable of playing complete songs and supporting an unlimited number of tracks

  • Muro Box fully liberates the constraints on music while retaining authentic mechanical sound production. It can not only play an entire song in full but also supports an unlimited number of tracks. Its plug-in design eliminates the need for manual winding, allowing the music box to play automatically and continuously.


  • By connecting to the App via Wi‑Fi, users can create customized cloud playlists or set offline song lists that can be intuitively switched using the knob.


  • Combined with remote control and scheduled playback, the music box can serve as a lifestyle assistant, automatically creating surprise and companionship on designated anniversaries or during everyday moments.
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What are the differences between the Muro Box N20 and N40?
  • N20: The 20-note music box features a diatonic scale, and it does not include semitones (the black keys on a piano). Most pop songs can be transposed to be performed with these 20 notes. It uses a single 20-note comb, producing a crisp, bright sound.


  • N40: The 40-note scale expands the range and includes semitones (chromatic scale), offering significantly more performance possibilities. It is ideal for songs with larger arrangements or prominent semitones (such as film scores, minor-key songs, jazz, and classical music).


    • The N40 Standard uses two combs (40 notes total), with the same crisp, bright tone as the N20.


    • The N40 Sublime (SLM) features four combs working in harmony. Each note strikes two comb teeth tuned 14 cents apart (80 teeth in total), creating a dense, rich resonance that replicates the luxurious sound of antique music boxes.

For more details on sound samples, materials, and resonance box differences, please refer to this article: Which Muro Box Is Suitable for Me?

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The precise differences between the N40 Sublime and N40 Standard models

N40 Standard – For a Pure and Clean Tone:
It features two 20-note combs for a total of 40 notes, paired with a zinc alloy base and North American hardwood body. The sound is clean, direct, and crisp, ideal for those who prefer transparent, bright timbre with faithful reproduction of the original sound.

N40 Sublime – For Rich and Lush Resonance:
It uses a brass base and heat-treated Acacia wood to produce a warmer tone. The key difference lies in the addition of a set of four combs detuned by 14 cents. During play, this creates a unique layered trembling resonance and extended sustain, resulting in a warm, deep, and emotionally complex timbre that recreates the opulent feel of luxury music boxes.

⮕ To learn more about detailed sound samples and the differences in materials and resonance chambers, please refer to this article: Which Muro Box is Right for Me?

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Which Muro Box model is right for me?

Choosing a Muro Box depends primarily on your budget, arrangement needs, and sound quality preferences:


  • N20 Series (Ideal for Beginners or Gifting): Features 20 full notes with a crisp timbre. Suitable for those on a budget, for gifting, or for playing general pop music.


  • N40 Standard (For Music Creators):Covers nearly 4 octaves (including semitones/black keys) and supports MIDI keyboard input. Best for creators who enjoy arranging and want to faithfully reproduce complex classical pieces or pop songs.


  • N40 Sublime (Flagship Collector’s Edition): Utilizes four note combs (80 teeth) playing in coordination, paired with a brass base and a Taiwan acacia wood case. Delivers a rich resonance and sustain, ideal for collectors seeking the ultimate sound quality.


  • Common Features: All models support unlimited song playback via the app, offline playlists, and optional laser engraving and custom arrangement services.


For detailed specification comparisons and audio demos, please visit the webpage:
⮕ Muro Box Official Website: Which Music Box Is Right for Me?

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How can I find the song I’m looking for?

You can find or obtain the song you want on Muro Box through the following methods:

  1. Online Repertoire Search: Enter the song name and artist directly in the Muro Box app or on the official website to freely search among thousands of tracks shared by players and arrangers worldwide.



  2. Import from the Music Box Community: Search on the world’s largest music box score website, MBM (Music Box Maniacs). Once found, you can import it directly into Muro Box for playback via the app at no cost.


  3. CustomArrangement Service: If the song is not available on the platforms above, you can provide a YouTube link or audio file and purchase the official custom arrangement service, where professional arrangers will tailor the piece for you.

⮕ For a more detailed tutorial on exploring the repertoire library and the custom arrangement process, please refer to: Muro Box Custom Music Box Gift Guide.

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How can I compare the sound of different Muro Box models?

Click the video below to hear the same song performed on all three Muro Box models. Compare their tone, resonance, sustain, and overall playing characteristics to find the sound you like best.

0:00 N40 Sublime | 1:07 N40 Standard | 2:15 N20 Standard

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What are the power specifications, dimensions, and weight of the music box?

Muro Box product specifications are as follows:

Power Adapter
Output Voltage: 15V
Rated Current: 3A
Rated Power: 45W
Input Voltage: 90~264VAC
Frequency Range: 47~63Hz
AC Current (Typ.): 1A/115VAC ; 0.5A/230VAC

Muro Box-N20 Standard
Operating Voltage: 15V
Operating Current: 2.5A
Product Dimensions (mm): 135(L) x 135(W) x 105(H)
Weight: 1.0 kg

Muro Box-N40 Standard
Operating Voltage: 15V
Operating Current: 3A
Product Dimensions (mm): 250(L) x 160(W) x 95(H)
Weight: 2.3 kg

Muro Box-N40 Sublime
Operating Voltage: 15V
Operating Current: 3A
Product Dimensions (mm): 250(L) x 160(W) x 95(H)
Weight: 4 kg

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Can I listen to music without connecting to the app?

No need to worry. Even without connecting to the app, the music box can play the default offline playlist. We have pre-loaded the official playlist at the time of shipping (30 songs for the N20 model; 15 songs for the N40 model). Once the music box is plugged in, simply press the knob to start listening with one easy step.

Additionally, if you require a custom arrangement, we will upload the song to the music box before shipping. After receiving the product, you can directly play your specified personalized song by plugging it in and pressing the knob, without needing the app at all.

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Where can I try out the product in person?

We currently have demo locations in Taiwan, Hong Kong, Japan, and South Korea where you can try listening and playing with the music box. Please fill out the reservation form in advance or call to book a trial session in case the products are sold out.

Taiwan Office Address:
1F,No. 16, Renci Street, Sanchong District, New Taipei City 241, Taiwan
Business Hours: Monday – Friday, 9:00 AM – 6:00 PM (GMT+8)

Email Us: support@tevofy.com
Whatsapp：+886-905-321-439
Facebook: Muro Box Global

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How can I arrange an online remote trial?
  1. Search for Your Desired Song
    Go to the [Muro Box Online Music Library] and search directly by song title or browse the “Popular Songs” section. A mark of 20 indicates the 20-note specification, while a mark of 40 indicates the 40-note specification.


  2. Choose a Preview Mode
    Click on a song to enter its playback page, where you can freely switch between two modes:
    – Web Mode (Preview): The system digitally plays the melody using the N20 music box’s tone samples, allowing you to quickly verify the melody and arrangement style.
    – Live Acoustic Demo Mode: Remotely connect to a physical music box in our Taipei office and hear the authentic sound of the note comb strike in real time!


  3. Select a Model and Listen Immediately
    In Live Demo Mode, you can choose between the N20, N40 Standard, or N40 SLM (Sublime) to experience the distinct sound and resonance of each model.
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Why doesn’t the music box have a built-in battery?

Due to the complexity of battery transportation safety regulations, we decided from the very beginning of the design process not to include a battery, allowing the music box to be shipped to as many countries as possible.

If you need to use the music box on the go, the N20 Standard, N40 Standard, and N40 Sublime all support USB-C power banks, allowing you to easily take the music box anywhere you go.

Compatible power bank specifications: Minimum of 45W USB-C power supply. Please use a model that supports 15V voltage and at least 3A current (45W 15V/3A).

For example, the following power bank is one of the models we used in internal testing: 

https://www.mi.com/global/product/mi-50w-power-bank-20000/

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How long can the music box play continuously?

Due to hardware limitations, continuous playback is capped at a maximum of 3 hours. After 3 hours, the playback speed will be reduced to prevent the device from overheating. If you need extended playback, we recommend setting up scheduled playlist playback, with a 30-minute interval between the start times of each playlist to protect the components from excessive wear. You are welcome to review the instructions for setting up scheduled playlist playback.

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How many songs can be stored in the offline playlist?

Muro Box has built-in flash memory that can store approximately 1,000 songs. After syncing to the offline playlist, you can play it directly by pressing the knob on the music box without needing to connect to the app.

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Can it be powered by a portable power bank? Which one is recommended?

Both the N20 Standard, N40 Standard, and N40 Sublime use USB-PD and can be powered by a portable power bank, allowing you to take your Muro Box wherever you go.
(Note: The N20 Lite uses a traditional DC power supply and does not support this external power bank functionality.)

Compatible power bank specifications: Minimum of 45W USB-C power supply. Please use a model rated for 15V voltage and at least 3A current (45W 15V/3A).

For example, the following power bank model is one we have used in our internal testing: https://www.mi.com/tw/20000mAh-mi-power-bank-3-pro/specs/

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Can I use Muro Box even if I don’t know how to arrange music?

Yes! The dedicated Muro Box app includes a built-in free cloud music library with thousands of preloaded songs (covering pop, classical, anime, and more). You can simply select and play any song with a single tap, just like using Spotify.

⮕ For a complete step-by-step guide with screenshots, please refer to the official support page: User Guide – Playing Music

If you wish to play songs not in the library, you can also download MIDI files for free online and import them into the app (ensure they conform to the music box’s note range), or you can commission Muro Box’s professional arrangers to create a custom music box version of a specific song. You don’t need to learn arrangement to enjoy an endlessly expandable music box experience!

⮕ Detailed guide on importing songs from MBM

⮕ How to submit a custom arrangement request

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How can I make the music box quieter or louder?

Muro Box uses a purely physical mechanical structure to strike the note comb, allowing the metal and wooden box to resonate naturally, producing a crisp tone. Since the sound is generated physically rather than through an electronic speaker, the volume cannot be directly controlled via the APP or a knob. However, you can enjoy the pleasure of fine-tuning the sound by changing the “conductive medium”:

  • Increase Volume (Enhance Resonance): Place the music box on a large wooden table, a hollow wooden cabinet, or use the official dedicated resonance box. The large wooden cavity amplifies the volume through physical resonance.


  • Decrease Volume (Absorb Vibration): Place a towel, sound-absorbing pad, or similar soft material under the music box. These soft materials absorb part of the physical vibration, reducing sound transmission to the table surface.
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If the Muro Box App is no longer maintained or updated in the future, can I still use my music box?

Yes. Absolutely.

From the very beginning, Muro Box was designed with the belief that a music box should be able to last for generations. To avoid the common risk of vendor lock-in associated with smart devices, Muro Box is built on open hardware architecture and standard communication protocols.

Even in the most extreme scenario—no official server, no Internet connection, and no App—your Muro Box remains a fully functional smart music box. You can continue using it and changing its songs through the following two completely cloud-independent methods:


  1. Offline Playback (Built-in Memory & USB Drive Support)

    Muro Box features built-in non-volatile memory. Any offline playlists synchronized from the App are stored directly inside the device. Even without an Internet connection or the App, simply connect the power and press the control knob to play the locally stored playlist.

    In addition, Muro Box supports direct playback from a USB flash drive. We designed this feature for users who prefer a simple, familiar way to update their offline songs without using the App.

    Simply:


    • Prepare a USB flash drive formatted as FAT32.


    • Copy your Standard MIDI files (.mid) into the root directory of the USB drive.


    • Insert the USB drive into the USB-C port on the back of the music box. Muro Box will automatically import the files into its offline playlist.


      This means that even without the App, you can freely update the songs stored in your music box for its entire lifetime.


  2. Standard MIDI Interface (Lifetime Hardware Compatibility)

    At its core, Muro Box is a MIDI playback device built around a real mechanical comb. It supports the industry-standard MIDI protocol via USB-C or Bluetooth BLE, allowing it to operate independently of our App or cloud-based music library.

    • Connect to a computer or mobile device

      You can use virtually any Digital Audio Workstation (DAW), including GarageBand, Logic Pro, Cubase, or Ableton Live, as well as third-party or open-source MIDI playback software, to send MIDI data directly to Muro Box for real-time performance.

    • Connect to external MIDI instruments

      You can also connect Muro Box directly to MIDI keyboards, digital pianos, or other MIDI-compatible hardware. Whatever you play on the controller will be performed instantly by the music box.

Even if the official App is no longer maintained in the future, engineers and makers around the world can continue controlling Muro Box using existing technical documentation with tools such as Python, Raspberry Pi, or Arduino, or even develop their own third-party control software. The product’s lifespan is not limited to our software—it can continue evolving with the community.

 

  • We fully understand concerns about the longevity and long-term reliability of smart devices. That’s why Muro Box is designed with a decentralized architecture. The cloud service and App are provided for convenience—not as a requirement. When you purchase a Muro Box, you own a fully programmable mechanical musical instrument that remains under your control.