Fiio M21 Complete User's Manual
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Fiio M21 Complete User's Manual

Fiio M21 Complete User's Manual

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All the pictures below are for illustrations only. Specifics are subject to the actual
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M21 Complete User Manual

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Summary of Contents for Fiio M21

  • Page 1 All the pictures below are for illustrations only. Specifics are subject to the actual product. M21 Complete User Manual...
  • Page 2 Thank you so much for purchasing FiiO's portable high resolution lossless music player M21. We have prepared this complete user manual for you. We hope this manual can help you get the hang of the M21 and unleash its full potential.

  • Page 3: Table Of Contents

    8. What power supply adapter is suggested to charge the M21? .......... 11 9. How to enter the tape mode? ....................... 12 10. How to use the D.MODE (Desktop Mode) and super high gain mode on the M21? 13 11. How to use the multifunction button? ..................14 An introduction to system settings menu ....................15...
  • Page 4 4. FiiO Link Wifi control ........................40 5.How to use the DLNA function? ....................41 6.How to use the coaxial function of M21? ................... 41 7. What can be done if I forget my password? How to enter recovery mode? ....41 Firmware upgrade, factory data reset and technical support ............

  • Page 5: Buttons And Ports

    1) 4.7-inch (750x1334) bezel-less screen: menu and other information displayed, used with physical buttons to operate the device. 2) Power/Lock button: Hold the Power/Lock button to turn on the M21 while it is off. On its first startup, tap the preferred language onscreen to enter the main...

  • Page 6: Foreword

    UI. Hold the Power/Lock button while the M21 is on and a shutdown dialogue will pop up. You can select to turn off or reboot the player. 3) Play/Pause: short press it when music is playing to pause the music; short press it when music is paused to resume the playback.

  • Page 7: Contents

    PO. Go to the menu of Settings->Audio->Output selection to switch to corresponding modes. The priority of the M21 output port 1. When the 3.5mm and 4.4mm earphones are inserted at the same time, the output will be given priority in the order of insertion.

  • Page 8: Status Bar And Display Page

    Status bar and display page The status bar on the top screen shows the working states of the M21.

  • Page 9: Instructions For Entry-Level Functions

    Instructions for entry-level functions 1. Five working modes The M21 has 5 independent working modes: Android mode, Pure Music mode, Bluetooth Receiving mode, USB DAC mode and AirPlay mode. It is defaulted to be the Android mode, which can be switched to other working modes in the drop-down menu.
  • Page 10 USB DAC/Amp. It can be switched to other modes on the drop-down or settings menu. Notes: when the M21 is going to work in the USB DAC mode for the first time, FiiO's exclusive USB DAC driver is required. Please download it on our website and follow relevant instructions to install it.

  • Page 11: How To Access The Storage/Sd Card After Connecting The M21 To A Computer

    3. Use a USB data cable to connect the M21 to the Mac computer. 4. Enter “Applications” , and double click the “Android File Transfer” . Then you can manage the files stored in the internal storage of the M21 or the micro SD card.
  • Page 12 If a new firmware is available and can be detected (with the M21 connected to an available internet), an upgrade notification will show up in the notification center. Tap on it to enter the update menu for the online upgrade. If there's no upgrade notification showing up, you can go to the "Technical Support->Firmware...

  • Page 13: How To Install Third-Party Apps

    For Mac computers, the M21 runs driver-free. For Windows computers, please make the settings as the followed steps. 1) Install the FiiO DAC driver in the computer first. 2) Switch the working mode of the M21 to USB DAC mode on the drop-down...

  • Page 14: How To Use The M21 As A Bluetooth Transmitter

    Settings->Mode choose menu to enter the USB DAC mode. 3) Connect the M21 to the computer by the USB port. Select the M21 as the audio input both in the computer and the music app, so it can work.

  • Page 15: What Power Supply Adapter Is Suggested To Charge The M21

    What can be done if the volume is too low when the M21 is connected to AirPods? 1.Go to System Settings-Audio and find the Bluetooth volume adjustment mode.

  • Page 16: How To Enter The Tape Mode

    Battery capacity: 4000mAh Battery life: 15 hours (3.5mm standard headphone out) 11.5 hours(4.4mm standard headphone out) 9. How to enter the tape mode? After installing the tape case, the M21 will automatically enter tape mode. For detailed instructions, see the following figure:...

  • Page 17: How To Use The D.mode (Desktop Mode) And Super High Gain Mode On The M21

    The definition of Desktop Mode: When D.mode switched turned on with USB inserted, the desktop mode icon will appear on the M21 screen. At this time, the M21 is powered directly from the USB port, without charging the M21 battery or consuming battery power.

  • Page 18: How To Use The Multifunction Button

    USB DAC Mode, Enter Bluetooth Receiving Mode, Lock screen/Wake up, No function 2. In Bluetooth Receiving mode/USB DAC mode, the multifunction button is forcibly set to: No Function. Note: This button only responds in Android mode/Pure Music mode, and some functions only apply to FIIO Music.

  • Page 19: An Introduction To System Settings Menu

    Here are the steps to connect the M21 to a new WiFi device. 1) In the settings menu of the M21, tap "WiFi". 2) Turn it on. The M21 will automatically search for and list available WiFi devices nearby.

  • Page 20: Bluetooth

    Enabling this option maintains a WiFi connection during sleep with moderately higher power usage. Bluetooth The M21 supports lots of Bluetooth codecs for both transmission and reception, allowing for rich wireless connections. Bluetooth transmitting...
  • Page 21 (Please refer to the user manual of the Bluetooth receiving device about how to enter pairing state.) 3.Go to the Bluetooth device list of the M21->Pair new device to complete the connection. What can be done if the M21 fails to connect to Bluetooth earphones?

  • Page 22: Bluetooth Receiving

    What can be done if the volume is too low when the M21 is connected to AirPods? 1.Go to System Settings-Audio and find the Bluetooth volume adjustment mode.

  • Page 23: Audio

    Audio Select 3.5mm output mode: switch the output mode of the multifunctional output port, with options for PO/LO/SPDIF. The default is PO. (When switching to LO, a pop-up prompt will...
  • Page 24 show up saying that Line output is not affected by volume control, and switching to line output will set the output volume to maximum, potentially causing harm to headphones and human hearings! Please unplug the headphones and select the appropriate device for correct connection before switching to line output). When turning on "Adjustable volume for line output,"...
  • Page 25 Lowpass filter mode There are three different filters on the M21. You can choose them according to your listening preference. Filters are some effects that come with the original DAC chip, and the adjustment is subtle for the sound.
  • Page 26 whenever possible (Adaptive Bitrate). Only applicable for Bluetooth transmission. Bluetooth volume adjustment mode This function is only available for Bluetooth transmission, which features “Sync Bluetooth volume” and “Indep Bluetooth volume” . The Sync Bluetooth volume should also be supported by the receiving device, otherwise, it will be unavailable.
  • Page 27 (2) Priority: All to DSD>PEQ>MQA. Auto pause without headphones When this function is enabled, under Android and Pure music modes, if the M21 is in music playback state without headphones connected, the system will automatically pause playback after 2 minutes.

  • Page 28: Display

    Display The display settings consist of Sample rate display, Dark theme, Brightness level,Indicator light control, Night light, Screen timeout, Font size, Display size, Screen saver and lock screen display. The following are detailed descriptions of some common item. Sample rate display With it turned on, the sample rate of the currently playing song will be displayed.

  • Page 29: Night Light

    Adjusting the brightness of the M21. Indicator light control Working: while working, two states can be set: constantly on and off On/off with the display: After enabling it, the indicator will on on off synchronously with the screen Indicator colour setting instruction: Night light The color of the display screen will be adjusted in amber under Night light mode.

  • Page 30: Global

    Make the items on your screen smaller or larger according to your preference. Screen saver You can choose our customized screen saver or system screen saver for M21. Lock screen Setting the content to be displayed when the screen is locked...
  • Page 31 FIIO Music. Power-off timers Sleep: when the set time is up, the M21 will turn off automatically. The sleep time can be set as any integer values between 0 and 120. Idle poweroff: the M21 will automatically turn off when the timer reaches the set time for idle poweroff when there is no operation or playback.
  • Page 32 poweroff time can be set as any integer values between 0 and 24h. (Note that this function will be disabled when it is set to OFF.) HOLD switch settings If the HOLD switch is turned on, you can enable/disable any buttons, touch screen.

  • Page 33: System

    System Languages & input The first time the device starts up, you can choose an appropriate language from the prompt. If you want to choose other languages, you can go to the Settings menu. Here are the instructions. 1) Go to the menu of Settings-> System-> Languages & input-> Languages; 2) In the Languages page, tap Add a language;...

  • Page 34: Reset Options

    Please back up your important data before resetting. FiiO Music APP The M21 has built in the FiiO Music app, a professional audio playing application specially developing for Android-based system and flagship-grade music players. Homepage FiiO Music APP will enter the homepage once it starts up as shown below.
  • Page 35 Quickly locate all songs Slide the screen with your finger on the letter bar at the right side. A quick search icon will show up in the middle of the screen. Sliding to corresponding initials and relieving your finger, it will directly jump to the songs starting with the initial you have chosen.
  • Page 36 Hidden menu Tap the ┇ icon at the right corner of each track to wake up the hidden menu. Then tap the icon in the menu to perform corresponding operations. Sort songs Tapping the hidden menu on the upper right corner of the screen, you can decide the way of songs sorted as Sort by date added, Sort by filename, Sort by the first letter and Sort by year.
  • Page 37 Bulk management Play music, WiFi music transfer, Add to my favorites, Add to playlists, Delete selected, and Exit bulk management.
  • Page 38 Playing page Tap the album cover in the bottom left corner to enter now playing page. Switch page By tapping the middle of the album cover, it will switch pages between album cover and lyrics circularly. Swipe left and right to switch songs. Playing progress Slide left and right on the progress bar below the album cover to quickly adjust the progress of the now playing song.
  • Page 39 Equalizer FiiO Music has a built-in equalizer, on which you can straightly choose the preset EQ for listening, or adjust it through the 10 frequency bands within 20Hz~20kHz from -12 to +12 dB, fully meeting personal music tastes.
  • Page 40 Choose preset EQ: swipe left or right on the bottom of the screen to switch equalizer. Customized EQ: drag the corresponding frequency band up and down to slightly adjust the EQ curve (on the bands page, switch left and right to change the option).
  • Page 41 There is a newly added frequency spectrum mode in the now playing page, which has 3 built-in spectrum effects available. Besides, users can self-define Full screen display or Original display for the spectrum mode. How to enable it: go to the Settings menu in FiiO Music app->Theme->Now playing page. Choose Spectrum display.
  • Page 42 Square cover and large cover: FiiO Music app keeps upgrading and maintaining.

  • Page 43: Instructions For Commonly-Used Functions

    1. Enable ""USB output"" in FiiO Music app of the M21. 2.Use an OTG cable to connect the M21 and the external decoder. 3.Open FiiO Music app or other music applications to use the M21 as a USB digital output device.

  • Page 44: Fiio Link Bluetooth Control

    3. FiiO Link Bluetooth control There are mainly 3 steps. 1) On the FiiO Music app of the M21, Settings->FiiO Link->┆ (on the upper right corner of the display), choose Bluetooth as the Server. 2) Connect the M21 to the mobile phone through Bluetooth.

  • Page 45: How To Use The Dlna Function

    (name it Device A) which supports DLNA function through WiFi. 1. Make sure the M21 and Device A are connected to the same WiFi network. 2.On the FiiO Music app of the M21, tap DLNA on the main menu and search for Device A to play music of it.
  • Page 46 The device could to be reset to factory data mode in recovery mode if M21 password is forgotten or M21 freezes or M21 no reaction during update. Turn off the device first. Hold the volume down button and plug a USB cable in for power supply.

  • Page 47: Firmware Upgrade, Factory Data Reset And Technical Support

    The M21 supports online upgrade and local upgrade. Online upgrade If a new firmware is available and can be detected (with the M21 connected to an available internet), an upgrade notification will show up in the notification center. Tap on it to enter the update menu for the online upgrade. If there's no upgrade notification showing up, you can go to the "Technical Support->Firmware...

  • Page 48: Force To Reboot

    Local upgrade Also, the M21 can be upgraded locally by a firmware package. Download the firmware package file from FiiO website, and copy it to the internal storage of the M21 or an SD card. Go to the "Technical Support->Firmware Upgrade->Local Upgrade"...

  • Page 49: Technical Support

    FAQ (frequently asked questions): parts of frequently asked questions and corresponding measures are listed. 3) Quick start guide: tap to check out the internal quick start guide of the M21. 4) Contact us: here shows our email address, Facebook, Twitter, etc.

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