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Fiio M15S Manual
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Fiio M15S Manual

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All the pictures below are for illustrations only. Specifics are subject to the
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Summary of Contents for Fiio M15S

  • Page 1 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 M15S. We have prepared this complete user manual for you. We hope this manual can help you get the hang of the M15S and unleash its full potential.
  • Page 3 Buttons and ports 1. Pictorial guide to buttons and ports (Pictures are for reference only. The real product may vary.) 2. Instructions for buttons and ports ①Volume knob：M15S uses the volume knob to adjust the volume by default.
  • Page 4 At this time, the volume button cannot adjust the volume. If you need to switch, you can enter Settings-Global, click "Volume Adjusting Mode", select "Adjust by Volume button" or "Adjust by Volume Knob". ②Power/Lockscreen: long press it for about 2 seconds when the device is off to turn it on;...
  • Page 5 USB Audio output, USB OTG, USB charging and other functions ⑮MicroSD card slot： supports one TF card (micro SD card), theoretically up to 2TB expansion. Status bar and display page 1.Status bar The status bar on the top screen shows the working states of the M15S.
  • Page 6 2. Icons in drop-down menu 3. Icons of working modes 4. Icons of setting menus...
  • Page 7 Instructions for entry-level functions 1.Five working modes The M15S 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 8 Android mode Third party applications will be available at will. It can be switched to other modes on the drop-down or settings menu.
  • Page 9 Notes: 1. When the M15S is going to work in the USB DAC mode for the first time in Windows computer, FiiO's exclusive USB DAC driver is required. Please download it on our website and follow relevant instructions to install it.
  • Page 10 The next time it enters Bluetooth Receiving mode, it will reconnect to the last connected device automatically. 2. Go to the Bluetooth transmitting list of the mobile phone, and tap the M15S to complete the connection.
  • Page 11 Please confirm that it is connected to an available network before entering AirPlay mode. There are mainly 3 steps. 1. Make sure the M15S and your iOS devices are connected to the same WiFi network. 2.Switch the M15S to the AirPlay mode.
  • Page 12 3. Enter ""Applications"", and double click the ""Android File Transfer"". Then you can manage the files stored in the internal storage of the M15S or the Micro SD card. Notes: The M15S folder will directly pop up the next time it is being connected...
  • Page 13 The M15S supports online upgrade and local upgrade. 1.Online upgrade If a new firmware is available and can be detected (with the M15S 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...
  • Page 14 4. How to install third-party apps? There are two ways to install applications that are similar to mobile phones'. 1.After connecting the device to a valid WiFi, go to FiiO market, Google Play or other app markets to download and install the app directly.
  • Page 15 Settings->Mode choose menu to enter the USB DAC mode. 3. Connect the M15S to the computer by the USB port. Select the M15S as the audio input both in the computer and the music app, so it can work.
  • Page 16 2. When the M15S is used as USB DAC for iOS device, please enable the ‘iOS devices decoding’ option in the setting menu first. 7. How to use the M15S as a Bluetooth receiver? 1. Go to the drop-down or Settings menu of the M15S, and choose the working mode as Bluetooth receiving mode.The M15S will enter pairing state...
  • Page 17 What Bluetooth codecs does the M15S support? And how to switch the Bluetooth codecs? The M15S supports LDAC, aptX-HD, aptX, AAC and SBC which can be switched on Settings->Audio->Wireless playback quality menu. What can be done if the volume is too low when the M15S is connected to AirPods?
  • Page 18 9. How to enter enhanced over-ear headphone mode(Ultra High mode) and Desktop mode? When the M15S is connected to fast charging adapter, the enhanced over-ear headphone mode could be enabled. At this time, the system will pop up a window to prompt the selection of Ultra High Mode and Desktop mode. And the enhanced over-ear headphones mode will be added to the gain setting menu.
  • Page 19 Introduction to system settings menu Here is the system settings menu of the M15S...
  • Page 20 1.WiFi The M15S supports a WiFi connection of 2.4/5G dual-band for music resources access. Here are the steps to connect the M15S to a new WiFi device. 1) In the settings menu of the M15S, tap "WiFi". 2) Turn it on. The M15S will automatically search for and list available WiFi devices nearby.
  • Page 21 3.Go to the Bluetooth device list of the M15S->Pair new device to complete the connection. 4.Tap the intended device to start the connection. Successfully connected devices will be displayed on the list of Available media devices with an "Active"...
  • Page 22 The next time it enters Bluetooth Receiving mode, it will reconnect to the last connected device automatically. 2. Go to the Bluetooth transmitting list of the mobile phone, and tap the M15S to complete the connection.
  • Page 23 3.Audio 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...
  • Page 24 Select 4.4Output mode 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; when playing DSD signals, it will first convert DSD to PCM and output PCM signals. DoP mode: PCM will be output as PCM signals while DSD will be output as raw DSD signals.
  • Page 25 When the M15S is connected to fast charging adapter, the enhanced Ultra high mode could be enabled. Lowpass filters mode There are 7 different filters built in the M15S for your preference. Filters are the sound effects born with the chip, which only has slight adjustments for the sound.
  • Page 26 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 If there is any imbalance between the left and right channels when playing music, you can adjust the channel balance here. It has up to 10 levels available.
  • Page 28 DSD. [Notes] When the All To DSD function is turned on, the CPU will consume more power, which will shorten the play time of the M15S with obvious heating on the body. During the process of using, if you notice that the total battery life is much shorter than that written on the specification table on our website, please check if the All To DSD function is turning on.
  • Page 29 4.Display The display settings consist of Sample rate display, Dark theme, Brightness level, Indicator light control, Night light, Wallpaper, Screen timeout, Font size, Display size, Screen saver and lock screen display. The following are detailed descriptions of some common items. Sample rate display With it turned on, the sample rate of the currently playing song will be displayed.
  • Page 30 Screen timeout 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.
  • Page 31 Night light The color of the display screen will be adjusted in amber under Night light mode. You could enable the Night light mode at a custom time , or from sunset to sunrise. Font size There are four standards available, which respectively are small, default, large and largest.
  • Page 32 Display size The display size corresponds to the size of the icons and texts displayed on the screen. 5.Global System navigation There are 3 navigation ways for your preference and needs, including Gesture...
  • Page 33 navigation, 2-button navigation and 3-button navigation. Gesture controls introduction...
  • Page 34 Multi-function button To assign the function of the multifunction button on the left side. 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 song, switch to USB DAC mode, switch to Bluetooth mode, no function, etc.
  • Page 35 In-vehicle mode 【Principle】 After turning on the In-vehicle mode, you can connect the USB 3.0 port of M15S to the on-board USB port. And the M15S will power on automatically and switch to the In-vehicle mode screen when the vehicle...
  • Page 36 (Some onboard USB ports may encounter interruptions when connecting to the M15S, in which case you can try to use FiiO's USB isolator, the LA-UA1, to fix the problem.) *The in-vehicle mode will only work for USB 3.0 port in the M15S.
  • Page 37 Hold switch setting If the HOLD switch is turned on, you can enable/disable any buttons, touch screen or the volume knob.
  • Page 38 Double tap to wakeup If it is enabled, double tap the screen can wake up the M15S when it is under off or in sleeping states. FiiO Roon The M15S is Roon Ready certified, allowing you to access music from a ROON CORE source such as a NAS or a computer.
  • Page 39 System Languages & input The first time the device starts up, you can choose an appropriate language...
  • Page 40 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; 3) Select a language;...
  • Page 41 Please back up your important data before resetting. FiiO Music APP The M15S has built in the FiiO Music app, a professional audio playing application specially developing for Android-based system and flagship-grade music players.
  • Page 42 1) Settings icon: tap the icon to enter the settings page. 2) Playing menu: press the icon to enter the playing page. 3) Recently playing: 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.
  • Page 43 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 44 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. 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.
  • Page 45 4.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. Adjust volume: slide up/down on the volume touch panel or press the physical button to increase/decrease the volume.
  • Page 46 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 47 Preset EQ: After turning on EQ switch, click the top left button and choose preset equalizer. User Defined 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 48 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 49 Square cover and large cover: FiiO Music app keeps upgrading and maintaining. For the newest instruction, please visit our official forum: https://forum.fiio.com/note/showNoteContent.do?id=20210507162642577434 9&tid=17...
  • Page 50 1) In FiiO Music app, turn on the USB output 2) Use an OTG adapter cable to connect the M15S to the external decoder. 3) Starting up the FiiO Music app or any music app, the M15S can work as a USB digital device.
  • Page 51 4.FiiO Link Wifi control There are mainly 3 steps. 1.Make sure the M15S and your mobile phone are connected to the same WiFi network. 2.On the FiiO Music app of the M15S, Settings->FiiO Link->┆ (on the upper right corner of the display), choosing WiFi as the Server. Now an IP address will show up.
  • Page 52 1. Make sure the M15S and Device A are connected to the same WiFi network. 2.On the FiiO Music app of the M15S, tap media server on the home page and search for Device A to play music of it.
  • Page 53 Notes: 1. Choose menu: use the volume buttons or previous track buttons 2. Confirm: short press the power button Firmware upgrade, factory data reset and technical support 1.How to upgrade firmware? The M15S supports online upgrade and local upgrade.
  • Page 54 Online upgrade If a new firmware is available and can be detected (with the M15S 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...
  • Page 55 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 M15S. 4) Contact us: here shows our email address, Facebook, Twitter, etc.