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Born for Music and Happy
M3 Complete User Guide
(Applicable to firmware version 1.0 and later)
Foreword
Thank you for purchasing FiiO's M3, our micro-sized 96kHz/24bit lossless music
player.
To let you better utilize the M3 to enjoy high-quality music, we have
prepared this complete user manual and answered some frequently asked questions
by users.
We hope this manual will help you get to know the M3 and unleash its
full potential.
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Martyn Kelly
June 16, 2025

how do i reset to factory settings?

Summary of Contents for Fiio M3 Complete

  • Page 1 M3 Complete User Guide (Applicable to firmware version 1.0 and later) Foreword Thank you for purchasing FiiO’s M3, our micro-sized 96kHz/24bit lossless music player. To let you better utilize the M3 to enjoy high-quality music, we have prepared this complete user manual and answered some frequently asked questions by users.
  • Page 2: Table Of Contents

    Born for Music and Happy Contents A. Introduction..........................3 Buttons and ports explained....................3 C. Firmware Updates........................4 D. Menu operation (pictorial guide).....................6 1. Categories Menu........................6 2. Quick Menu..........................1 3. Custom EQ..........................8 Menu operation (textual guide)....................8 1. Powering on and off......................8 2.
  • Page 3: Introduction

    Born for Music and Happy A. Introduction The M3 is a HiFi-class digital audio player, supporting lossy and lossless music formats including MP3, WAV, WMA, APE, FLAC, and Ogg Vorbis. A maximum sample rate of 96kHz/24bit is supported and other features include CUE sheet support, playlist support and auto sleep / shutdown.
  • Page 4: Firmware Updates

    Born for Music and Happy Categories menu; Hold in Now Playing screen to show Quick menu; Hold in any music listing to show operations menu; Press briefly within any menu to go back up a menu level 3) OK / Play button: Press briefly in Now Playing to play / pause music;...
  • Page 5 Born for Music and Happy 1. Please ensure that the M3 is adequately charged, preferably fully charged, before updating the firmware, to prevent loss of power during the update. 2. You can only enter the shortcuts menu and from there the settings menu and the firmware update option by holding the menu button from the Now Playing screen.
  • Page 6: Menu Operation (Pictorial Guide)

    Born for Music and Happy settings->Storage formatting->Format internal memory option on the M3. Please back up data / songs in the internal memory first as formatting deletes all data there. D. Menu operation (pictorial guide) Playlists Shows the 3 built-in playlists and 1.
  • Page 7: Quick Menu

    Born for Music and Happy 2. Quick Menu Play Mode To enter Quick menu: hold Menu button in Press OK to switch between Now Playing screen Sequential Loop Single Button usage guide: Menu: Press to back up one menu level; Hold in music listing to show operations menu Loop list Shuffle...
  • Page 8: Custom Eq

    Born for Music and Happy 3. Custom EQ The Custom EQ allows you to customize the response level at and around 5 set frequency bands to customize the sound output of the M3 to your personal tastes. To operate: Menu: Cancel changes and go back to Equalizer listing OK: Save changes and go back to Equalizer listing...
  • Page 9: Categories Menu

    Born for Music and Happy Press OK button to pause / play the music. 3. Categories Menu From Now Playing screen, press menu button briefly to enter Categories Menu. There are 5 category types available: Playlists, All Songs, Artists, Albums and Folders.
  • Page 10: Song Info

    Born for Music and Happy output. The following options are available: Off: No equalizer applied; Built-in equalizers (fixed): Rock, Blues, Metal, Jazz, Classical, Electronic; Custom: Custom EQ allows user-defined adjustments of the response level at and around the 5 frequency bands of 62Hz, 250Hz, 1kHz, 6kHz and 16kHz。 To operate the Custom EQ: 1) Use Up / Down to choose “Custom”...
  • Page 11: Settings

    Born for Music and Happy 5. Settings The settings can be categorized into Play Settings and System Settings. These are shown together in one list, with Play Settings in the first page and System Settings in the 2 and 3 pages.
  • Page 12: System Settings

    Born for Music and Happy 4) Balance This adjusts the volume balance between left and right channels. Available range is from L10 (left side louder) to 0 (centered) to R10 (right side louder). Press OK on this option to show adjustment slider, then press Up / Down to adjust slider and OK to save changes and return to settings menu (or press Menu to cancel).
  • Page 13 Born for Music and Happy 2) Update Media Lib (Update Media Library) The Media Library needs to be updated for songs to be shown in Category listings (except for Folders listings). The media library update function can be set to Auto or Manual: Auto runs an update every time after a computer connection has ended or a micro SD card has been inserted.
  • Page 14 Born for Music and Happy 6) Sleep timer (min.) Use this option to set a timer for the player to power off after the specified number of minutes, regardless of music playing or button presses on the M3. This is useful e.g. as a timer for listening at bedtime. The Sleep timer can be set to Off or 10 to 120 minutes in 12 steps.
  • Page 15: Tips On Usage

    Born for Music and Happy 10) Storage formatting (Format internal memory) Use this option to format the 8GB internal memory of the M3 (e.g. if it has been formatted into an incompatible format by mistake, when the M3 was connected to a computer).
  • Page 16: Faq

    Born for Music and Happy 1. How to update the media library quickly with newly added songs? A: Set Settings→System Settings→Update Media Lib to Auto and the M3 will automatically update the media library every time the M3 finishes connection with a computer or a micro SD card is inserted.
  • Page 17: Transferring Songs

    Born for Music and Happy 3) How long does it take to charge the M3? A: The M3 may be fully charged using a recommended DC 5V and 1A in about 2.5 hours. 4) Can the M3 be charged by a portable power bank? A: Yes.
  • Page 18: Firmware Updates

    M3 and try another USB cable or computer. If the M3 cannot be support@fiio.net connected to any computer using any cable, please contact for support. 3. Firmware updates 1) How to check whether my M3 has the latest firmware? 1.
  • Page 19: Storage

    Born for Music and Happy 4. Storage 1) What cards do the M3 support? A: The M3 supports micro SD cards (also known as TF cards), including SDHC and SDXC cards. 2) Is the M3 picky about cards? A: The M3 has been tested to support major brands such as Sandisk and Kingston very well.
  • Page 20: Playing Music

    Born for Music and Happy using the M3 (this deletes all files on the card; please back up your data and music first) and putting your files back on the card; If this does not help, it is recommended that you try another card with the M3.
  • Page 21: Other Operations

    Born for Music and Happy 5) Why do my lyrics not show? A: 1. The M3 only supports external .LRC files, named after the music file it lyricizes. 2. Choose the Lyrics instead of Cover in the Preferred display. 6) Why am I seeing rubbish characters? A: Only ANSI, Unicode and UTF-8 (with and without BOM) encodings are supported for ID3 tags and .lrc files to be read by the M3.
  • Page 22 Born for Music and Happy pictures, may cause the M3 to slow down while sifting through them looking for music files. It is recommended to dedicate the micro SD card on the M3 to music. 4. Playing high bitrate files from slow micro SD card may cause stuttering. Class 6 or above genuine micro SD cards are recommended.

This manual is also suitable for:

M3

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