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M11S Complete User Manual
All the pictures below are for illustrations only. Specifics are
subject to the actual product.
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Terry Finneson
February 13, 2025

My micro sd card has over 3600 songs down loaded so far, but in the Fiio app it only shows 2943 songs. It also shows storage internally but I have not assigned any music files to the 32mg. internal storage.

Summary of Contents for Fiio M11S

  • Page 1 M11S Complete User Manual All the pictures below are for illustrations only. Specifics are subject to the actual product.
  • Page 2 Thank you so much for purchasing FiiO's portable high resolution lossless music player M11S. We have prepared this complete user manual for you. We hope this manual can help you get the hang of the M11S and unleash its full potential.
  • Page 3: Table Of Contents

    5. How to change the language? ..................14 6. How to enable the USB DAC function? ..............15 7. How to use the M11S as a Bluetooth transmitter? ..........15 8. What power supply adapter is suggested to charge the M11S? ......17 Introduction to Settings menu ....................
  • Page 4 4. FiiO Link Wifi control ......................67 5.How to use the DLNA function? .................. 68 6.How to use the coaxial function of M11S? ............... 69 7.What can be done if I forget my password? How to enter recovery mode? . 71 Firmware upgrade, factory data reset and technical support ........
  • Page 5: An Introduction To The M11S

    An introduction to the M11S As a high fidelity portable music player, the M11S is equipped with Qualcomm's Snapdragon 660 SoC and 5.0 inch/720P bezel-less display, supporting an internal storage of 32GB and up to 2TB Micro SD card, image zooming and multi-touch.
  • Page 6: Buttons And Ports

    Buttons and ports 1. Pictorial guide to buttons and ports (Pictures are for reference only) 2. Instructions for buttons and ports 1) Power/Lockscreen: long press it for about 2 seconds when the device is off to turn it on; long press it when the device is on to pop up the menu of reboot/shutdown;...
  • Page 7 10) 2.5mm balanced output: supports 2.5mm balanced headphone output. 11) 3.5mm headphone/line-out/SPDIF output: shared outputs of line- out, spdif out and PO The priority of the M11S output port 1. When the 3.5mm, 2.5mm and 4.4mm earphones are inserted at the...
  • Page 8 same time at the same time, the output will be given priority in the order of insertion 2. According to the Android system's own processing method, Bluetooth transmission and analog output (including SPDIF) will follow the principle of post-access priority.
  • Page 9: Status Bar And Display Page

    Status bar and display page The status bar on the top screen shows the working states of the M11S. Instructions for entry-level functions 1. Five working modes...
  • Page 10 The M11S 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 11 USB DAC/Amp. It can be switched to other modes on the drop-down or settings menu. Notes: when the M11S 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 12: How To Connect The M11S 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 M11S or the Micro SD card. Notes: The M11S folder will directly pop up the next time it is being...
  • Page 13: How To Upgrade Firmware

    The M11S supports online upgrade and local upgrade. 1) Online upgrade If a new firmware is available and can be detected (with the M11S 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 14: 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 M11S. 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 15: How To Enable The Usb Dac Function

    Settings->Mode choose menu to enter the USB DAC mode. 3) Connect the M11S to the computer by the USB port. Select the M11S as the audio input both in the computer and the music app, so it can work. Notes: When in the USB DAC mode, the M11S does not support Bluetooth transmitting.
  • Page 16 (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 M11S->Pair new device to complete the connection. What can be done if the M11S fails to connect to Bluetooth...
  • Page 17: What Power Supply Adapter Is Suggested To Charge The M11S

    What can be done if the volume is too low when the M11S is connected to AirPods? Go to Settings->About phone, and continuously tap the "Build number"...
  • Page 18: Introduction To Settings Menu

    Introduction to Settings menu WiFi The M11S supports a WiFi connection of 2.4/5G dual-band for music resources access. Here are the steps to connect the M11S to a new WiFi device. 1) In the settings menu of the M11S, tap "WiFi".
  • Page 19: Bluetooth

    (such as Bluetooth headphones, Bluetooth speakers), the M11S needs to pair with the Bluetooth device first. Here are the steps. 1) Go to the Settings->Bluetooth menu. 2) Turn on Bluetooth. 3) Tap "Pair new device". The M11S will automatically search for and list available Bluetooth devices nearby.
  • Page 20 "Active" prompt. Before connecting to a Bluetooth device, you can select the Bluetooth codec you like in the M11S. Here are the steps. 1) Go to the Settings->Audio menu. 2) Tap Bluetooth Audio Encoder-> choose the intended Bluetooth codec.
  • Page 21: Bluetooth Receiving

    Bluetooth devices. Bluetooth receiving When the M11S 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 22: Audio

    Audio...
  • Page 23: Spdif Out

    Output selection Both PO and LO are available for 3.5mm and 4.4mm. SPDIF OUT The SPDIF out (Coaxial Out) supports DoP and D2P modes. In D2P mode, PCM will be output originally while DSD will be converted to PCM signal. In DoP mode, both PCM and DSD signal will be output originally (Note that when outputting DSD signal, the latter decoding device is required to support DSD decoding for normal output.)
  • Page 24: Gain

    Gain There are 3 gain levels, high, medium and low. For common situations, the low gain can help to achieve longer music experience. When using high-impedance headphones and other similar devices, high gain can help to achieve smoother music experience.
  • Page 25: Lowpass Filter Mode

    Lowpass filter mode There are 7 different filters (internal configuration of the ES9038Q2M) built in the M11S 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 26: 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 27: Balance

    this option. Balance If there is any imbalance between the left and right channels when playing music, you can adjust the channel balance here. It supports L20-R20 adjustment.
  • Page 28: All To Dsd

    All To DSD When the All To DSD function is turned on, the PCM signals will be converted to DSD for output with sound quality further improved. 【Principle】All To DSD is mainly about switching digital signals from PCM to DSD format. So when making digital-to-analog conversion, it can use DSD format, enriching music styles with clearer and natural sound quality.
  • Page 29: Display

    When it is selected, the volume is adjustable at LO output. Otherwise, it is fixed at the maximum volume. Display The display settings consist of Sample rate display, Dark theme, Brightness level, Night light, Wallpaper, Screen timeout, Font size, Display size, Screen saver and lock screen display. The following are detailed descriptions of some common items.
  • Page 30: Night Light

    Night light The color of the display screen will be adjusted in amber under Night light mode, e to enable the Night light mode at a custom time , or from sunset to sunrise. Screen timeout...
  • Page 31: Font Size

    This option is to set the time when the device will enter sleeping mode after inactivity. The device will enter low power consumption mode after 10 minutes of sleeping. Short press the Power/Lockscreen button to wake it up. Font size There are four standards available, which respectively are small, default, large and largest.
  • Page 32: Display Size

    Display size The display size corresponds to the size of the icons and texts displayed on the screen.
  • Page 33: Global

    Global System navigation There are 3 navigation ways for your preference and needs, including Gesture navigation, 2-button navigation and 3-button navigation.
  • Page 34 Multi-function button You can customize the multi-function buttons to select a frequently used function for one-button quick start. For example, you can set the button to add to favorites, random play, play/pause, switch filter, switch equalizer, delete the currently playing...
  • Page 35: Power-Off Timer

    song, switch to USB DAC mode, switch to Bluetooth mode, no function, etc. Power-off timer There are two types of the timer, Sleep and Idle poweroff. Sleep The device will automatically shut down when the time reaches the set value. It can be set to any integer value between 0 and 120 minutes. (Note that if it is turned OFF, the sleep shutdown function will be disabled.) Idle poweroff...
  • Page 36: In-Vehicle Mode

    In-vehicle mode 【Principle】After turning on the In-vehicle mode, you can connect the M11S to the on-board USB port, and the M11S will power on automatically and switch to the In-vehicle mode screen when the vehicle engine starts, and power off automatically when the vehicle...
  • Page 37: Double Tap To Wakeup

    【How to set】Go to Settings->Global->In-vehicle mode, or the drop- down menu to turn on the in-vehicle mode. Double tap to wakeup If the Double tap to wakeup function is enabled, the sleep device can be wake up by double-tapping the screen.
  • Page 38: 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 39: 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.
  • Page 40: Fiio Music App

    Please back up your important data before resetting. FiiO Music APP The M11S has built in the FiiO Music app, a professional audio playing application specially developing for Android-based system and flagship-grade music players.
  • Page 41 FiiO Music will enter the homepage once it starts up as shown below. 1) Settings icon: tap the icon to enter the settings page. 2) Playing menu: press the icon to enter the playing page.
  • Page 42 3) Recently played: the list of recently played songs will be presented chronologically. 4) Frequently played: the list of recently played songs will be presented based on playing frequencies. 5) Recently added: a list of recently added songs will be presented chronologically.
  • Page 46 2. 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 47 3. All songs 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.
  • Page 49 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 and Sort by the first letter. Bulk management: Play music, WiFi music transfer, Add to my favorites, Add to playlists, Delete selected, and Exit bulk management.
  • Page 52 4. Playing page...
  • Page 54 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. Adjust volume: slide up/down on the volume touch panel or press the physical button to increase/decrease the volume. 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 55 Notes: on the lyrics display page, you can adjust the song progress, lyrics timeline and font size.
  • Page 57 5. 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 59 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 60 6. UV meter There is a newly added UV meter (audio meter) with a dB threshold and dynamic pointer displayed. Closing to the red threshold of 0dB means audio distortion. How to enable it: tap the song cover on the now playing page to enter the UV meter displaying page.
  • Page 61 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 63 Square cover and large cover:...
  • Page 65 FiiO Music app keeps upgrading and maintaining. For the newest instruction, please visit our official website:https://www.fiio.com/M11PlusLTD_FAQ or refer to the detailed introduction videos: https://www.bilibili.com/video/BV1VK4y1V7EH/...
  • Page 66: Instructions For Commonly-Used Functions

    2) Use an OTG adapter cable to connect the M11S to the external decoder. 3) Starting up the FiiO Music app or any music app, the M11S can work as a USB digital device. It supports most decoders on the market. For those unsupported, please turn off the USB output in FiiO Music app, or unplug and re-plug the USB device after exiting FiiO Music app to try playing again.
  • Page 67: Fiio Link Wifi Control

    Notes: iPhones only support FiiO Link WiFi control but not Bluetooth. 4. FiiO Link Wifi control There are mainly 3 steps. 1.Make sure the M11S and your mobile phone are connected to the same WiFi network. 2.On the FiiO Music app of the M11S, Settings->FiiO Link->┆ (on the upper right corner of the display), choosing WiFi as the Server.
  • Page 68: How To Use The Dlna Function

    Notes: iPhones only support FiiO Link WiFi control but not Bluetooth. 5.How to use the DLNA function? The DLNA function means the M11S can read and receive music files stored on the device (name it Device A) which supports DLNA function...
  • Page 69: How To Use The Coaxial Function Of M11S

    1. Make sure the M11S and Device A are connected to the same WiFi network. 2.On the FiiO Music app of the M11S, tap DLNA on the main menu and search for Device A to play music of it. Notes: If there are any devices that cannot use the DLNA function, please give us feedback for further analysis.
  • Page 70 1. Switch the SPDIF work mode of M11S to SPDIF OUT mode from Settings-Audio; And please turn on 'Coaxial output' option before using the coaxial output function. 2. Use a coaxial cable with one side connected to M11S and the other side to a coaxial decoder;...
  • Page 71: What Can Be Done If I Forget My Password? How To Enter Recovery Mode

    3. When you use the FiiO Music, DSD OUT should give priority to DoP. If the coaxial decoder doesn't support it, please select D2P mode. 7.What can be done if I forget my password? How to enter recovery mode? The device needs to be reset from recovery mode if you forget the password.
  • Page 72 "Check for updates" icon to check manually. Local upgrade Also, the M11S 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 M11S or an SD card. Go to the "Technical...
  • Page 73: Force To Reboot

    Support->Firmware Upgrade->Local Upgrade" menu, and find the firmware package file to start the upgrade. Notes: 1.Do not unzip the firmware package file. 2.Before the upgrade, ensure the power of the device is adequate (>30%) so to avoid upgrade failure. 3.If the device goes to factory mode which cannot detect the firmware, the reason may be that the firmware file is damaged.
  • Page 74: Technical Support

    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. Please backup corresponding files in advance.
  • Page 75 M11S. 4) Contact us: here shows our email address, Facebook, Twitter, etc.

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