Fiio JM21 Complete User's Manual
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Fiio JM21 Complete User's Manual

Fiio JM21 Complete User's Manual

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JM21 Complete User Manual
(Please update JM21 to latest firmware version first.)
All the pictures below are for illustrations only. Specifics are
subject to the actual product.
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Summary of Contents for Fiio JM21

  • Page 1 JM21 Complete User Manual (Please update JM21 to latest firmware version first.) All the pictures below are for illustrations only. Specifics are subject to the actual product.
  • Page 2 Foreword Thank you so much for purchasing FiiO's portable high resolution lossless music player JM21. We have prepared this complete user manual for you. We hope this manual can help you get the hang of the JM21 and unleash its full potential.

  • Page 3: Table Of Contents

    6. How to enable the USB DAC function? ..............13 7. How to use the JM21 as a Bluetooth transmitter? ..........14 8. What power supply adapter is suggested to charge the JM21? ...... 15 Introduction to Settings menu ....................16 WiFi ..............................
  • Page 4 6.How to use the coaxial function of JM21? ..............38 7. What can be done if I forget my password? How to enter recovery mode? 38 Firmware upgrade, factory data reset and technical support ........39 1.How to upgrade firmware? ................... 39 2.Force to reboot .........................

  • Page 5: Buttons And Ports

    1) Power/Lockscreen: Hold the Power/Lock button to turn on the JM21. On its first startup, tap the preferred language onscreen to enter the main UI. Hold the Power/Lock button while the JM21 is on and a shutdown dialogue will pop up. You can select to turn off or reboot the player.
  • Page 6 9) 3.5mm headphone/line-out/SPDIF output: shared outputs of line- out, spdif out and PO The priority of the JM21 output port 1. When the 3.5mm and 4.4mm earphones are inserted at the same time at the same time, the output will be given priority in the order of insertion 2.

  • Page 7: Status Bar And Display Page

    Status bar and display page The status bar on the top screen shows the working states of the JM21.

  • Page 8: Instructions For Entry-Level Functions

    Instructions for entry-level functions 1. Five working modes The JM21 supports five working modes, including Android mode, Pure Music mode, AirPlay, USB DAC mode and Bluetooth Receiving mode. It is defaulted to be Android mode when the device is powered on for the first time, which can be switched to other modes on the drop-down or settings menu.
  • Page 9 USB DAC/Amp. It can be switched to other modes on the drop-down or settings menu. Notes: when the JM21 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 10: How To Connect The Jm21 To A Computer

    3) Enter "Applications", and double click the "Android File Transfer". Then you can manage the files stored in the internal storage of the JM21 or the Micro SD card. Notes: The JM21 folder will directly pop up the next time it is being...

  • Page 11: How To Upgrade Firmware

    The JM21 supports online upgrade and local upgrade. 1) Online upgrade If a new firmware is available and can be detected (with the JM21 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.

  • Page 12: How To Install Third-Party Apps

    Google Play or other app markets to download and install the app directly. 2) Method 2 (Local installation): copy the APK file to the JM21. Go to the file management menu to find the file and install it. 5. How to change the language? Go to Settings->System->Languages and input->Languages->Add a...

  • Page 13: How To Enable The Usb Dac Function

    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 JM21 to USB DAC mode on the drop-down menu or go to Settings->Mode choose menu to enter the USB DAC mode.

  • Page 14: How To Use The Jm21 As A Bluetooth Transmitter

    (Please refer to the user manual of the Bluetooth receiving device about how to enter the pairing state.) 3) Go to the Bluetooth device list of the JM21->Pair new device to complete the connection. What can be done if the JM21 fails to connect to Bluetooth...

  • Page 15: What Power Supply Adapter Is Suggested To Charge The Jm21

    What can be done if the volume is too low when the JM21 is connected to AirPods? 1. Go to System Settings-Audio and find the Bluetooth volume adjustment mode.

  • Page 16: Introduction To Settings Menu

    Introduction to Settings menu WiFi The JM21 supports a WiFi connection of 2.4/5G dual-band for music resources access. Here are the steps to connect the JM21 to a new WiFi device. 1) In the settings menu of the JM21, tap "WiFi".

  • Page 17: Bluetooth

    Bluetooth The JM21 supports lots of Bluetooth codecs for both transmission and reception, allowing for rich wireless connections. Bluetooth transmitting When being a Bluetooth transmitter connecting to new Bluetooth devices (such as Bluetooth headphones, Bluetooth speakers), the JM21 needs to pair with the Bluetooth device first. Here are the steps.
  • Page 18 Note that it needs to be disconnected and reconnected to enable the new codec after changing it. What can be done if the volume is too low when the JM21 is connected to AirPods? 1. Go to System Settings-Audio and find the Bluetooth volume...

  • Page 19: Bluetooth Receiving

    Bluetooth devices. Bluetooth receiving When the JM21 is working as a Bluetooth receiver to connect to a new Bluetooth device, such as a mobile phone, turn on the Bluetooth, go to the Settings menu-> Mode choose, and select Bluetooth Receiving Mode.

  • Page 20: Audio

    Audio Output selection 3.5Output selection PO (Power output), generally used when connecting to earphones and speakers LO (Line out), generally used when connecting to power amplifiers SPDIF (Coaxial out), generally used when connecting to DACs 4.4Output selection BAL.PO and BAL.LO available SPDIF out (it only needs to be set in this way when the coaxial output is used) D2P mode: when playing PCM signals, it will output raw PCM signals;...

  • Page 21: Gain

    Lowpass filter mode There are 7 different filters (internal configuration of the ES9038Q2M) built in the JM21 for your preference. Filters are the sound effects born with the chip, which only has slight adjustments for the sound. Here are some introductions to different filters.

  • Page 22: Bluetooth Audio Encoder

    4) slow roll-off, minimum phase filter: Non-Symetrical filter designed to minimize pre-ringing. Strong punchy bass with good transient attacks 5) apodizing fast roll-off,linear phase filter: Version of Linear phase fast roll-off filter optimized to improve pre-ringing. 6) hybrid fast roll-off, minimum phase filter: Combination of Linear- phase and Minimum-phase.

  • Page 23: Adjustable Volume At Lo

    Notice: the All To DSD mode will heat up the device more seriously, and the battery life will be relatively shortened. Adjustable volume at LO When it is selected, the volume is adjustable at LO output. Otherwise, it is fixed at the maximum volume. Auto pause without headphones When this feature is enabled, in Android and Pure music modes, if no headphones are connected, playback will automatically pause after 2...
  • Page 24 With it turned on, the theme will switch from the default white theme to a dark theme. Brightness level Adjusting the brightness of the JM21. Indicator light control Working: while working, two states can be set: constantly on and off...

  • Page 25: 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 JM21. Lock screen Setting the content to be displayed when the screen is locked Global...

  • Page 26: Double Tap To Wakeup

    There are two types of the timer, Sleep and Idle poweroff. Sleep when the set time is up, the JM21 will turn off automatically. The sleep time can be set as any integer values between 0 and 120. Idle poweroff the JM21 will automatically turn off when the timer reaches the set time for idle poweroff when there is no operation or playback.

  • Page 27: 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;...

  • Page 28: Reset Options

    Reset options "Reset WiFi, mobile & Bluetooth" will reset all network settings, including WiFi and Bluetooth. "Reset app preferences" will reset all preferences including the items shown in the following picture. "Erase all data", i.e. factory reset, will erase all data from your device's internal storage, and all settings will be reset to default.

  • Page 29: Fiio Music App

    FiiO Music APP The JM21 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 30 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...
  • Page 31 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. Bulk management Play music, WiFi music transfer, Add to my favorites, Add to playlists, Delete selected, and Exit bulk management.
  • Page 32 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 33 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 34 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 35 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 36: Instructions For Commonly-Used Functions

    1. Enable ""USB output"" in FiiO Music app of the JM21. 2.Use an OTG cable to connect the JM21 and the external decoder. 3.Open FiiO Music app or other music applications to use the JM21 as a USB digital output device.

  • Page 37: Fiio Link Wifi Control

    (name it Device A) which supports DLNA function through WiFi. 1. Make sure the JM21 and Device A are connected to the same WiFi network. 2.On the FiiO Music app of the JM21, tap DLNA on the main menu and...

  • Page 38: How To Use The Coaxial Function Of Jm21

    7. What can be done if I forget my password? How to enter recovery mode? The device could to be reset to factory data mode in recovery mode if JM21 password is forgotten or JM21 freezes or JM21 no reaction during update.

  • Page 39: Firmware Upgrade, Factory Data Reset And Technical Support

    The JM21 supports online upgrade and local upgrade. Online upgrade If a new firmware is available and can be detected (with the JM21 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.

  • Page 40: Force To Reboot

    Also, the JM21 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 JM21 or an SD card. Go to the "Technical Support->Firmware Upgrade->Local Upgrade" menu, and find the firmware package file to start the upgrade.

  • Page 41: Factory Data Reset

    Please hold the power button for around 10 seconds until the "FiiO"logo shows up. 3.Factory data reset If there are some problems happened to the device, perform the factory data reset would help (In the menu of Settings->System->Reset options). Notes: The "Factory data reset" will erase all data from the internal storage and reset the device to defaults.
  • Page 42 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 JM21. 4) Contact us: here shows our email address, Facebook, Twitter, etc.

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