FiiO M17 – Desktop-Class Portable DAP with Dual ES9038PRO & THX AAA 788+

FiiO M17 – Desktop-Class Portable DAP with Dual ES9038PRO & THX AAA 788+

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[Desktop Level ES9038PRO DAC]: Left and right audio channels each contain a desktop class 8-channel ES9038PRO DAC. This means that... Read more

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    Description

    • [Desktop Level ES9038PRO DAC]: Left and right audio channels each contain a desktop class 8-channel ES9038PRO DAC. This means that each audio channel has 8 parallel outputs added for superior resolution and minimal distortion for extremely pure audio reproduction.
    • [THX 788+ Desktop Class Headphone Amplifier]: Desktop class amplification also plays an important role in M17 audio player. FiiO and THX have jointly developed the exclusive THX AAA-788+, an updated version of the original operational amplifier. Compared to the original, the output power is increased by 225% up to 3000mW per channel, with a lower output impedance - allowing you to power all types of headphones more easily.
    • [Desktop Level Connectivity]: M17 mp3 player features: 3.5mm output: headphone output; 6.3mm output: headphone output; 2.5mm output: balanced headphone output; balanced headphone output/balanced line output; RCA coaxial port: coaxial input and output; 3 USB port .0: supports modes USB host and device, can be used for high-speed data transfers and fast charging; USB 2.0 port: support USB host mode. allowing external DACs or hard drive storage to be connected.
    • Desktop Heat Dissipation: With exceptional audio quality, it comes with great power consumption, so effective heat dissipation was a big focus when designing the M17 music player. The H type heat dissipation and liquid cooling VC technologies are not only adopted, the 151g unibody aluminum alloy structure of the M17 Bluetooth mp3 player also effectively transfers the heat out of the device. Finally, the cooling fan holder also ensures that heat is transported quickly.
    • Desktop Quality Power Supply: The M17 digital music player contains two power sources - one battery power supply and one external DC powered power supply. The battery power supply allows you to use the M17 lossless mp3 player in situations where there is no access to an outlet. Under the DC power supply, the voltage in the analog circuit is increased by 35% up to 11.5V compared to the power supply under the battery; and the battery is kept healthy, as it is not used in this mode.
    • Desktop level gain: Under battery power, there are 4 levels of gain: low, medium, high and headphone mode. When in DC mode, the enhanced earphone mode gain is unlocked, with a true level of amplification gain on the desktop. At balanced output, the gain can reach 16dB - allowing the M17 audio player to easily drive most headphones.
    • [A true smartphone-like experience]: Open Android 10 operating system to install third-party applications; Bluetooth 5.0 with aptX Adaptive support, supports up to DSD512 and 32bit/768kHz, supports 8x MQA deployment for master level sound.
    • Massive 9200mAh Battery: The huge 9200mAh battery allows for up to 10 hours battery life on the M17 music player. It can be charged via USB or DC input from an external DC adapter. Battery capacity: 9200mAh; Charging time: 4.5 hours; Charging protocols: QC4.0 + PD; Battery life: 10.6 hours (single end), 8.6 hours (balanced).
    • [Radiant RGB Ambient Light]: M17 Bluetooth MP3 Player features a seven color RGB ambient light system with extensive customization options. Colors can be set to be fixed, follow the audio, or follow a cycle. Ambient light brightness can be adjusted to change depending on current power, volume or temperature. And finally, the upper and side ambient lights can even be controlled separately, allowing you to dial exactly how you want your dazzling lights to be.
    • Connection Methods: With Speakers: DC + LO Speakers; With Computer: USB DAC + Headphones; With Desktop DAC: USB/Coaxial Output + DAC; With Hard Drive Storage: DC + USB 2.0 + Hard Drive + Headphones; With Bluetooth Headphones: Bluetooth Transmitter + Bluetooth Headphones; Coaxial Decoding

    Specifications

    • Weight: 200gr
    • Usage: Indoor & outdoor

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight
    • Banner image for: <h1>M17</h1><h3>Portable Desktop-Class Player<br/><br/></h3>

      M17

      Portable Desktop-Class Player

      Dual ES9038PRO | Dual THX AAA 788+ | Dual power supplies

      2 volume control modes|Qualcomm QCC5124 | XMOS XUF208

      Supercapacitor | 5.99 inch incell display|5 audio output interfaces

      Dual USB Type C connectors | 9200mAh battery | RGB ambient light



    • Banner image for: <h1><br/><br/><br/></h1>






    • Banner image for: <h1>Redefining portable</h1><h1>expectations<br/><br/></h1>

      Redefining portable

      expectations

      The smart desktop-class M17 is an entirely new chapter of

      Fiio digital audio players. Its desktop-grade DAC,

      amplification, power supply, etc. give it the output power

      and sound quality to rival and perhaps even surpass

      highly-regarded desktop systems – but in a portable

      package. Let the M17 redefine what is possible with

      portable audio players.



    • Banner image for: <h1>Desktop-league</h1><h1>DAC ES9038PRO<br/><br/></h1>

      Desktop-league

      DAC ES9038PRO

      The left and right audio channels each contain a

      desktop-class, 8-channel ES9038PRO flagship DAC.

      This means that each audio channel has 8 parallel

      outputs summed together for superior resolution

      and minimal distortion for extremely pure audio

      reproduction.


    • Banner image for: <h1>Desktop-class THX 788+</h1><h1>headphone amp<br/><br/></h1>

      Desktop-class THX 788+

      headphone amp

      Desktop-class amplification also plays an important role

      in the M17. FiiO and THX jointly developed the exclusive

      THX AAA 788+, an upgraded version of the original op-

      amp. Compared to the original, output power is

      increased by 225% up to 3000mW per channel with a

      lower output impedance – allowing it more effortlessly

      power all kinds of headphones.

    • Banner image for: <h1>Desktop-grade gain<br/></h1>

      Desktop-grade gain

      Under battery power, there are 4 gain levels: low, medium, high, and

      headphone mode. When under DC mode, the Enhanced over-ear

      headphone mode gain is unlocked, with a truly desktop level of

      amplification gain. In balanced output, gain can get as high as 16dB –

      allowing the M17 to easily drive most headphones.

    • Banner image for: <h1>Desktop-level</h1><h1>connectivity<br/></h1>

      Desktop-level

      connectivity

      Thanks to its larger size, the M17 features a variety of connectivity

      options allowing for many different convenient use cases:

    • Banner image for: <h1>Desktop-tier</h1><h1>heat dissipation</h1>

      Desktop-tier

      heat dissipation

      With exceptional audio quality comes large power consumption,

      so effective heat dissipation was a large focus when designing the M17.

      Not only are "H" type heat dissipation and VC liquid cooling technologies adopted,

      the M17's 151g unibody aluminum alloy frame also

      effectively transfers heat out of the device. Finally, t

      he cooling fan stand also further makes sure heat is rapidlytransported away.

    • Banner image for:
    <h1>Desktop-caliber internals</h1><h1>High-end TI OPA2211 op-amp<br/></h1>

    Desktop-caliber internals

    High-end TI OPA2211 op-amp

    A voltage noise as low as 1.1nV@1KHz and THD+N of

    -136dB results in extremely clean amplification.


    <h1>470mF DMF supercapacitor<br/><br/></h1>

    470mF DMF supercapacitor

    Equivalent to 10,000 47uF tantalum capacitors and with very low ESR of

    45mΩ (only 15% of that of tantalum capacitors), providing a solid

    foundation for a large power supply.




    <h1>Ultra-low noise LT3045 LDO<br/></h1>

    Ultra-low noise LT3045 LDO

    n ultra-low noise, ultra-high PSRR low-dropout voltage linear

    regulator featuring Linear Technology's LDO architecture an

    extremely low RMS noise of 0.8μVRMS in the 10Hz-100kHz

    frequency band for stable, clean power to the DAC chip.




    <h1>NDK femtosecond crystal</h1><h1>oscillator<br/></h1>

    NDK femtosecond crystal

    oscillator

    Provides a high-precision, low-jitter unified clock source for

    the entire audio circuit.

    <h1>A true smartphone-like </h1><h1>experience<br/><br/></h1>

    A true smartphone-like

    experience

    Qualcomm Snapdragon 660

    It equips the open Android 10 that allows installations of third-party apps

    (no SRC limit at all).

    <h1>Flagship QCC5124 chip<br/><br/></h1>

    Flagship QCC5124 chip

    Bluetooth 5.0 with support for aptX Adaptive

    Bluetooth reception: SBC, AAC, aptX, aptX-LL, aptX-HD, aptX Adaptive,

    LDAC, LHDC

    Bluetooth transmission: SBC, AAC, aptX, aptX-HD, LDAC




    <h1>XMOS receiver chip</h1>

    XMOS receiver chip

    ultra-low latency, supports up to DSD512 and 32-bit/768kHz

    <h1>Gravity sensor<br/></h1>

    Gravity sensor

    screen can be automatically rotated like a smartphone thanks to the

    gyroscope

    <h1>Extremely fast transfer<br/></h1>

    Extremely fast transfer

    with USB 3.0 writing speeds can hit up to 100MB/s, allowing file

    transfers to complete within minutes or even seconds

    <h1>MQA supported</h1>

    MQA supported

    supports MQA unfolding for master-level sound

    <h1>Supports Roon Ready<br/></h1>

    Supports Roon Ready

    Roon tested with high proficiency in managing

    related local files and streaming playback.

    • Banner image for: <h1>10-band PEQ precise tuning</h1><h1>Born for good sound</h1>

      10-band PEQ precise tuning

      Born for good sound

      The PEQ (Parametric Equalizer) function was designed for the M17,

      which supports 10-band self-defined tuning. On the FiiO Music App in

      the M17, users can self-adjust the frequency, gain level, Q value, etc.,

      achieving more accurate frequency response among every frequency

      range while ensuring high fidelity sound quality. It supports up to

      192kHz/24bit unit PEQ style.

      *Enable PEQ through the FiiO Music App. After enabling PEQ would replace the

      default EQ, of which each frequency band can be self-defined.

    • Banner image for: <h1>Physical digital-analog separation</h1><h1>For reduced interference</h1>

      Physical digital-analog separation

      For reduced interference

      Within the M17 are 17 PCBs with immersion gold finish, with the analog

      and digital sections physically separated by being on two different

      boards to reduce interference between the two portions. 7 high-

      conductivity copper alloy shields also provide shielding to greatly reduce

      internal and external electromagnetic interference on analog audio

      signals within the M17.

    • Banner image for: <h2>Highly-optimized modular </h2><h2>internal structure</h2>

      Highly-optimized modular

      internal structure

      The M17's design took 1.5 years to complete, going through 6 major

      design iterations with 12 rounds of internal structure design

      optimization. The result is a device that makes excellent use of its

      internal space. Within the M17 are carefully stacked analog and digital

      boards with thoughtful use of stainless-steel hexagons - which allowed

      FiiO to stuff nearly twice the surface area of PCBs compared to normal in

      such a limited space.

    • Banner image for: <h1>7th-gen mech design</h1>

      7th-gen mech design

      The futuristic, seamless, CNC-finished aluminum unibody

      design evokes a sense of technological wonder. The

      mech-inspired sharp lines of the body, buttons, and

      atmospheric lights give the M17 a bold and charismatic

      aura.

    • Banner image for: <h1>Press or twist to enjoy<br/></h1>

      Press or twist to enjoy

      The volume can be adjusted either using an analog

      potentiometer knob or using buttons. Quickly and easily go

      through 120 levels of volume through either method.

    • Banner image for: <h1>Radiant RGB </h1><h1>ambient light</h1>

      Radiant RGB

      ambient light

      The M17 features a seven-color RGB ambient light

      system with extensive customization options. Colors can

      be set to be either fixed, to follow the audio, or to follow

      a cycle. The brightness of the ambient light can be set to

      change depending on the current power, volume, or

      temperature. And finally, the top and side ambient lights

      can even be controlled separately, allowing you to dial in

      exactly how you want your dazzling lights to be.

    • Banner image for: <h1>Bigger screen for a</h1><h1> brighter sheen</h1>

      Bigger screen for a

      brighter sheen

      A larger screen allows you to more easily enjoy

      stunning visuals. Let your eyes feast upon an upgraded 5.99 inch,

      1080*2160 FHD+ 18:9 high-definition incell display.

    • Banner image for: <h1>Immense 9200mAh battery</h1>

      Immense 9200mAh battery

      The massive 9200mAh battery allows for a battery life up to

      10 hours on the M17. It can be charged either through USB

      or through DC from an external AC adapter

      Battery capacity: 9200mAh | Charging time: 4.5 hours |

      Charging protocols: QC4.0+ PD

      Battery life: 10.6 hours (single-ended), 8.6 hours (balanced)

    <h1>Coaxial decoding<br/><br/></h1>

    Coaxial decoding

    <h1>With desktop DAC</h1>

    With desktop DAC

    USB/coaxial output+DAC

    <h1>With Bluetooth headphones</h1>

    With Bluetooth headphones

    Bluetooth transmitter+Bluetooth headphones

    <h1>With hard drive storage</h1>

    With hard drive storage

    DC+USB2.0+hard drive+headphones

    • Banner image for: <h1>A first-rate premium experience</h1>

      A first-rate premium experience

      • External DC adapter
      • Cooling stand with fan
      • PET screen protector with oleophobic layer (pre-applied)
      • Leather case
      • micro-SD card ejector pin
      • USB 3.0 data and power cable
      • Aluminum dust plug
    <h1>M17 Specification</h1>

      M17 Specification

      • SoC: Qualcomm Snapdragon 660
      • DAC: ES9038PRO×2
      • Amplifier: THX AAA 788+
      • Bluetooth receiver: QCC5125
      • USB receiver: XMOS XU208
      • Crystal oscillators: 49.152MHz femtosecond crystal oscillator ×2
      • Output power: 32Ω (THD+N: 0.0008%, 1%):381mW ×2 (balanced)190mW ×2 (single-ended)
      • Noise floor: ≤-130dB (A-weighted)
      • SNR: ≥130dB (A-weighted)
      • THD+N: ≤0.0008% (1kHz/32Ω)
      • Operational modes: Android/ Pure music/ USB DAC/ Bluetooth receiver/ AirPlay/SPDIF RX
      • Dimensions: approx. 156.8×85.2×28mm
      • Weight: 510g
      • Display: 5.99 inch (1080×2160) incell touchscreen display
      • Charging supports: QC3.0, QC4.0, PD2.0, and PD3.0 quick charge
      • Battery capacity: 9200mAh
      • Battery life: approx. 10 hours (single-ended), 8.6 hours (balanced)
      • Charging time: approx. 4.5h (with quick charge)
      • Volume controls: potentiometer knob or button controls
      • Memory (RAM/user available (ROM)): 6GB/approx. 46GB
      • Total storage: 64GB
      • Expansion storage: single microSD card slot, theoretical support up to 2TB
      • Gain/low medium/high headphone impedance: fit for low-impedance over-ear headphone mode (when connected to DC)
      • Channel balance: ≤±20dB (0.5dB per step)
      • Recommended headphone impedance: 16-150Ω (SE output)/16-300Ω (BA output)

      FAQ

      1. What should I do if the system crashes or freezes?

      Follow the measures below to see if it can help if the system crashes or freezes:
      1.Force to reboot

       Please hold the power button for around 10 seconds until the "FiiO" logo shows up.

      2.Extract a LOG file

      For special software issues, please extract a LOG file under the root directory, unzip and copy it to the homepage. And then send it to us for analysis. The name of the folder: fiio_log 

      3.Fail to be charged or turned on
      a. Hold the power button for about 10 seconds when it is charging
      b.Try other power adapters and charging cables.
      c.The battery of your device may be overused, so it needs to be refreshed through low-current power. It is suggested to charge it through the computer for more than 2 hours, and then unplug the charging cable to see whether it can be turned on.
      d. If the problem still exists, please try to leave the device aside for 2 to 3 days, and then charge it again. Because sometimes its system may be stuck, it would return to normal when the device runs out of power.

      If the above measures cannot help, please ask the local seller for help or contact us by sending an email to support@fiio.com.

      4. 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.

      Turn off the device first.

      Hold the play/pause button then plug a USB cable in USB 3.0 port  for power supply.  It will enter recovery mode after turning on.

        

      On the display, choose "Wipe data/factory reset->Yes.

      You could switch the option via the volume +/- or play/pause buttons. Then choose "Reboot system now" by pressing the power button to restart the device.


      5. How to optimize the system if it runs slow and unsmooth? 
      The system runs slow: go to Settings->Storage menu to clean the system and free up space. 

      Errors happen to FiiO Music: go to Settings->Apps and notifications->All apps->FiiO Music->Storage&cache menu to clear the app.

      2.M17's buttons and ports introduction

      【DC Port】
      12V DC power supply port, after connecting to the power adapter and turning the switch to DC, the hidden gain mode---enhanced over-ear headphones mode will be triggered

      【The difference betwwen USB3.0 and USB HOST ports】
      There are two USB ports at the bottom of the M17.
      USB3.0: supports data transfer with computer, USB DAC, USB Audio output, USB OTG, USB charging and other functions
      USB HOST (2.0): Supports USB Audio output and USB OTG, but does not support functions such as connecting to a computer or charging.

      【Volume knob and side volume buttons】
      M17 uses the volume knob to adjust the volume by default. 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".

      【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 song, switch to USB DAC mode, switch to Bluetooth mode, no function, etc.

      【Hold switch】
      You can customize it. After turning it on, the buttons and knobs that are in the off state will be locked.

      【BAT/DC switch】
      When the switch is set to BAT, the system will use the battery as a power source. When the switch is set to DC and the DC power adapter is connected(there is a power adapter in the accessories of the M17), the system will switch to DC power supply. At this time, the enhanced over-ear headphones mode will be added to the gain setting menu, and the system will pop up a window to prompt it, please choose whether to switch according to your needs. In the enhanced over-ear headphones mode, M17 will be able to provide greater output power, suitable for high-impedance headphones.

      3.What is the priority of the M17 output ports?

      1. When the PO 3.5mm, 6.35mm, 2.5mm and 4.4mm are output at the same time, the output will be given priority in the order of insertion; if the 6.35 and 3.5 earphones are inserted at the same time, both ports have output, and the status bar will display two icons (The same is true for LO); 2.5 and 4.4 are the same as 6.35 and 3.5.


      2. When both balanced and single-ended headphones are plugged in, the first plugged-in headset will have a sound, and the status bar will only display the first plugged-in headset icon.
      3. The spdif output is controlled by a separate switch. The analog output (PO/LO) and spdif digital output can be output at the same time.
      4. According to the Android system's own processing method, Bluetooth transmission and analog output (including SPDIF) will follow the principle of post-access priority.

      4. The indication of sampling rates and settings of indicator lights

      On Settings->Display->Sample rate display menu, turn on this option, so it can display the sampling rate of the playing music file.

      On the Settings->Display->Indicator light control menu, you can make settings for the brightness of the side indicator light, and display states when the M17 is working or charging. 

      5.How to access the storage/SD card after connecting the M17 to a computer?

      Windows computers

      it is driver-free. After connecting the M17(USB 3.0 port) to the computer by the included USB cable, the driver will be automatically installed. Then the FiiO M17 disk can be directly seen on the computer. 

      Mac computers

      Mac computers need a driver.
      1.After connecting the M17(USB 3.0 port) to the Mac computer, click the "NO NAME" folder emerging on the desktop->double click Mac->Mac/MAC OS MTP Client->Android File Transfer.dmg. Drag the "Android File Transfer.dmg" to the desktop of the computer.

      2. Drag the "Android File Transfer" file to the "Applications" folder and wait for the completion of the copy.

      3.  Enter "Applications", and double click the "Android File Transfer". Then
      you can manage the files stored in the internal storage of the M17 or the Micro SD card.

      Notes: The M17 folder will directly pop up the next time it is being connected to the same computer.

      You could refer to this video for help: https://youtu.be/SUWVdbTjj6g

      6. How to upgrade the M17?

      The M17 supports online upgrade and local upgrade. 
      1.Online upgrade
      If a new firmware is available and can be detected (with the M17 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 Upgrade" menu, and tap the "Check for updates" icon to check manually.

      2.Local upgrade
      Also, the M17 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 M17 or an SD card. Go to the "Technical 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. At this time, press the power button to reboot the device. Re-download the firmware file and restart the upgrade. 

      7. How to install third-party applications?

      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.

      2.Local installation: copy the APK file to the M17. Go to the file management menu to find the file and install it.

      8. How to switch the working modes of the M17?

      The M17 has 6 independent working modes: Android mode, Pure Music mode, Bluetooth Receiving mode, USB DAC mode, SPDIF RX and AirPlay mode. It is defaulted to be the Android mode, which can be switched to other working modes in the drop-down menu.

      If the player is in other modes but not the Android mode, you can switch it to other modes through the selection on the display, or tap Settings->Exit to go back to Android mode. 

      9. How to enable the USB DAC function?

      For Mac computers, it is driver-free.

      For Windows computers, please make the settings as the followed steps.
      1.Install the FiiO DAC driver(Download link: Click here) in the computer first. 
      2.Switch the working mode of the M17 to USB DAC mode on the drop-down menu or go to Settings->Mode choose menu to enter the USB DAC mode.
      3. Connect the M17 to the computer by the USB port. Select the M17 as the audio input both in the computer and the music app, so it can work.

      Notes:
      When in the USB DAC mode, the M17 does not support Bluetooth transmitting.

      10. How to use the M17 as a Bluetooth receiver?

      1. Go to the drop-down or Settings menu of the M17, and choose the working mode as Bluetooth receiving mode.

      2. Go to the Bluetooth transmitting list of the mobile phone, and tap the M17 to complete the connection.

      *1. You could hold the play/pause button for 5 seconds to re-enters pairing state in the M17.

      2. The M17 will reconnect the Bluetooth device connected previously after enter Bluetooth receiving mode again.

      11. How to use the M17 as a Bluetooth transmitter?

      It is similar to the mobile phone's. Here are the instructions.

      1. Go to the Settings->Bluetooth menu to turn on the Bluetooth function.
      2.Make the Bluetooth receiving device, such as Bluetooth earphones, enter the pairing state. (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 M17->Pair new device to complete the connection. 

      What can be done if the M17 fails to connect to Bluetooth earphones?
      If it fails to connect to Bluetooth earphones for the first time, please make sure the earphones are under pairing state (the connection will fail if the earphones are under reconnecting state for the first-time connection). Go to the Bluetooth menu of the M17 to start the connection.

      What Bluetooth codecs does the M17 support? And how to switch the Bluetooth codecs?
      The M17 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 M17 is connected to AirPods?
      Go to Settings->About phone, and continuously tap the "Build number" 7 times. Go back to Settings->System->Developer options menu to turn off the"Disable absolute volume". Disconnect and reconnect the two devices through Bluetooth.

      12. How to use the AirPlay function?

      The AirPlay function will only be available when connecting the M17 to iOS devices but not Android devices. There are mainly 3 steps.
      1. Make sure the M17 and your iOS devices are connected to the same WiFi network.
      2. Switch the M17 to the AirPlay mode.
      3.On the drop-down menu of the iOS device, choose the M17 as the playing device. So the M17 can receive audio signals from the iOS device.

      13. How to connect the M17 to an external decoder? Does it support USB audio digital output?

      The M17 supports USB audio. The setting steps are as follows.
      1. Enable "USB output" in FiiO Music app of the M17.
      2.Use an OTG cable to connect the M17 and the external decoder.
      3.Open FiiO Music app or other music applications to use the M17 as a USB digital output device.

      It supports most of the decoding devices on the market. For those unsupported, you can turn off the USB output in FiiO Music app, or unplug and re-plug the USB device after quitting the FiiO Music app. If it does not work, please contact us by sending an email to support@fiio.com for further help.

      14. What is the function of the M17' In-vehicle mode? And how to use it?

      【Principle】After turning on the In-vehicle mode, you can connect the M17(USB 3.0 port) to the on-board USB port, and the M17 will power on automatically and switch to the In-vehicle mode screen when the vehicle engine starts, and power off automatically when the vehicle engine stops. 

      【How to set】Go to Settings->Global->In-vehicle mode, or the drop-down menu to turn on the in-vehicle mode.

      (Some onboard USB ports may encounter interruptions when connecting to the M17, 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 M17.

      You could refer to this video for help: https://youtu.be/84GonCzm_aM

      15. How to use the coaxial function of M17?

      M17 coaxial port supports output and input of coaxial signals.

      Coaxial input: Coaxial decoding mode, M17 is used as a coaxial decoder.

      1. Switch the SPDIF work mode of M17 to SPDIF IN mode from Settings-Audio or go to the drop-down or Settings menu of the M17, and choose the working mode as SPDIF RX mode.

      2. Use coaxial cable to connect M17 and coaxial output device;

      3. Connect the headphone to the M17 to use it.

      Coaxial output: this function will not use M17's DAC chip for decoding, but output to the coaxial decoder for decoding.

      1. Switch the SPDIF work mode of M17 to SPDIF OUT mode from Settings-Audio;

      2. Use a coaxial cable with one side connected to M17 and the other side to a coaxial decoder;

      3. When you use the FiiO Music APP, DSD OUT should give priority to DoP. If the coaxial decoder doesn't support it, please select D2P mode.

      16. What power supply adapter is suggested to charge the M17?

      1. Supports QC4.0, QC3.0, QC2.0, PD2.0, PD3.0 and other fast charging protocols, if the adapter does not support the above protocol, it generally will not trigger the fast charge function. It is recommended to use 5V 1-2A adapters for non-fast charging adapters.After setting to UAC mode, inserting USB fast charging will not make it enter the fast charging mode.
      2. Supports a 5.5mm diameter DC round head 12VDC charger to power the whole machine.
      3. When the DC voltage is too high and exceeds 16V, the system will automatically disconnect the DC power supply.
      4. When the DC and USB3.0 are plugged in at the same time, the system will detect whether the USB is a Fast charge, it will use USB to charge the battery if the USB is a fast charge.
      5. When the M17 is in UAC mode, it will not enter fast charging mode.

      17. How to use the FiiO Link Bluetooth function?

      There are mainly 3 steps.
      1. On the FiiO Music app of the M17, Settings->FiiO Link->┆ (on the upper right corner of the display), choosing Bluetooth as the Server.
      2.Connect the M17 to the mobile phone through Bluetooth. 
      3.On the FiiO Music app of the mobile phone, Settings->FiiO Link->┆ (on the upper right corner of the display), choosing Bluetooth as the Client.

      Notes: iPhones only support FiiO Link WiFi function but not Bluetooth.

      Here is the video tutorial about FiiO Link Bluetooth function: 

      https://youtu.be/ef1KXutAxUI

      18. How to use the FiiO Link WiFi function?

      There are mainly 3 steps.
      1.Make sure the M17 and your mobile phone are connected to the same WiFi network.
      2.On the FiiO Music app of the M17, Settings->FiiO Link->┆ (on the upper right corner of the display), choosing WiFi as the Server. Now an IP address will show up.
      3. On the FiiO Music app of the mobile phone, Settings->FiiO Link->┆ (on the upper right corner of the display), choosing WiFi as the Client. Input the IP address in the pop-up dialog and complete the connection.

      Notes: iPhones only support FiiO Link WiFi function but not Bluetooth.

      Here is the video tutorial about FiiO Link Wifi function: 

      https://youtu.be/H3172EBcKVA

      19. How to use the DLNA function?

      The DLNA function means the M17 can read and receive music files stored on the device (name it Device A) which supports DLNA function through WiFi.

      1. Make sure the M17 and Device A are connected to the same WiFi network.
      2.On the FiiO Music app of the M17, 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. FiiO Music app does not support music transmission at present but only music reception. We will consider adding the transmission function later.

      20. Instructions for Settings->Audio menu

      1. Single-ended output selection

      PO (Power output), generally used when connecting to earphones and speakers

      LO (Line out), generally used when connecting to power amplifiers

      2. Balanced Output selection

      PO and LO available

      3.SPDIF out (it only needs to be set in this way when the coaxial output is used)

      SPDIF IN: Coaxial decoding mode, M17 is used as a coaxial decoder.

      SPDIF OUT: The M17 output to the coaxial decoder for decoding. (will not use M17's DAC for decoding)

      4.Gain

      There are 4 levels, High, Medium Low and Over-ear headphone mode, corresponding to 4 levels of output voltages. You can select different Gains according to the earphones used.

      When the switch is set to DC and the DC power adapter is inserted, you cound switch to the hidden Enhanced Over-ear headphone mode.

      5.Lowpass filters

      There are 7 different filters (internal configuration of the ES9038PRO) built in the M17 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. These are only for reference since actual listening also has something to do with the matched device.

      1) Sharp Roll-Off Filter: full and rich sounds, positioned at the very rear. It is suitable for pop music.

      2) Short Delay Sharp Roll-Off Filter: robust, thick and atmospheric sounds, positioned at the rear. With accurate sound positioning and enough sound thickness, it is suitable for pop music.

      3) Low Dispersion Short Delay Filter: neutral sounds, positioned near the middle. It is a traditional filter that can match different music styles. If you have no idea about the filter, you can choose this one.

      4) Slow Roll-Off Filter: coherent and clear sounds, positioned near the middle. It is suitable for classical music.

      5) Short Delay Slow Roll-Off Filter: ultimately untouched sounds, positioned near the front. It can create an immersive music environment with clear and uncontrolled sounds, which is suitable for classical music.

      6) Super Slow Roll-Off Filter: soft sounds, positioned at the very front. It is fast with relatively clean sounds.

      6.Wireless playback quality

      The Bluetooth transmission takes the highest codec by default. You can choose the highest codec supported for the Bluetooth connection by this option.

      7.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.

      8. Coaxial output

      After switching the SPDIF work mode to SPDIF OUT, please turn on this switch before using the coaxial output function.

      9.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. In addition, since the lowest format of the DSD is DSD64, i.e. 4 times of the 44.1k/16bit (just looking at the data size), the All To DSD function is upsampling the 44.1k/16bit audio signals. Third-party apps also support All To 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 M17 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. It is suggested to turn off the All To DSD function and follow the provided test conditions to check the battery life of the M17 again.

      10.Adjustable volume at LO

      When it is turned on, the volume will be adjustable in LO mode. If it is turned off, the volume will be fixed as maximum.

      11. Max system volume

      When the max system volume is set, the system volume will not go higher than the set volume.

      21. Instructions for Settings->Global menu

      1.System navigation

      Gesture, 2-button and 3-button navigation are available.

      2.Multifunction button

      To assign the function of the multifunction button on the left side.

      3.Power-off timers

      Sleep: when the set time is up, the M17 will turn off automatically. The sleep time can be set as any integer values between 0 and 120.

      Idle poweroff: the M17 will automatically turn off when the timer reaches the set time for idle poweroff when there is no operation or playback. During this process, the timer will restart if there is any operation or playback. The idle poweroff time can be set as any integer values between 0 and 50. (Note that this function will be disabled when it is set to OFF.)

      4.HOLD switch setting

      When it is enabled, all closed buttons will be locked and cannot be used.

      5.Volume adjusting mode

      The M17 use the volume knob for adjusting the volume by default. The volume button could not adjust the voulme at that time. You could switch this option to 'Adjust by volume button' and the volume button could adjust the volume now. Please select the option according to your need.

      6.In-vehicle mode

      【Principle】After turning on the In-vehicle mode, you can connect the M17 to the on-board USB port, and the M17 will power on automatically and switch to the In-vehicle mode screen when the vehicle engine starts, and power off automatically when the vehicle engine stops.

      【How to set】Go to Settings->Global->In-vehicle mode, or the drop-down menu to turn on the in-vehicle mode.

      (Some onboard USB ports may encounter interruptions when connecting to the M17, 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 M17.

      22. How to change the language on the M17?

      Go to Settings->System->Languages and input->Languages->Add a language to choose the intended language.Hold the "=" icon on the right side and drag it to the first line to select the language successfully.

      The language of the FiiO Music app defaults to follow the system's. You can also go to FiiO Music app-> Settings->Languages to choose the language independently.

      23. Lyrics display, screenshot and system navigation way of the M17

      【Lyrics display】

      Yes. Name the LRC lyrics file the same as the music file and put them in the same folder. On the music playing page, tap the cover on the middle of the screen to switch to the lyrics display page.

      【Screenshot】

      Use 3 fingers to swipe down the screen. Or hold the power button and volume- button together to get a screenshot.

      Where does the screenshot store: FiiO M17\Files\Internal storage\Pictures\Screenshots

      【System navigation way】

      The M17 is controlled by gesture navigation by default. It can be changed to 2-button or 3-button navigation way on the Settings->Global->System navigation menu.

      24. How to make M17 enter enhanced over-ear headphones mode?

      1. Use the power adapter included in this device to connect to a power supply.

      2. Switch the BAT/DC switch on the side of the M17 to the DC power supply to enable the hidden enhanced over-ear headphone mode.

      Note: You can choose other gain modes in the drop-down menu. Connecting to a DC power supply is only valid for the enhanced over-ear headphone mode, and other gain effects will remain unchanged.

       

      Here I would like to simply talk about why the enhanced over-ear headphone mode of the M17 will be enabled in DC power supply mode.(From FiiO James)

       

      Ever since entering the market, the M17 has received quite positive user feedback, esp. the exclusive enhanced over-ear headphone mode, which makes it a power monster among portable music players on the market. Thanks to its high power supply voltage and large dynamics, it has distinctive effects on different earphones. That is why consumers like it so much.

       

      Naturally, many users are expecting that the enhanced over-ear headphone mode of the M17 can also be enabled when the M17 is powered by the battery. Here I would like to make a brief explanation with the help of the power supply block diagram of part of the amp circuit.

       

      There are basically two power supplies for the M17. One is the built-in battery (the internal battery works when charging through the TC port), and the other is the 12V DC input through the DC round port.

       

      The battery is powered by a DC/(DC power converter) that boosts the battery voltage from 3.7V to 10V. The external 12V DC voltage will first pass through an overvoltage protection chip to avoid excessive voltage exceeding the maximum working voltage of the internal chip and thus burning the chip.

       

      The two different power supplies will first go through a voltage selection switch. If the DC/BAT switch is turned to BAT, the 10V power supply boosted by the battery will be selected. The 10V power will then enter into a 1:1 negative voltage converter which will be converted to -10V direct current.

       

      Then the ±10V current will be sent to a high-precision LDO (linear voltage regulator) to reduce to ±8V before providing power to the THX 788+ amp circuit.

       

      If the DC/BAT switch is set to DC which reaches to 12V power supply, it will enter into a 1:1 negative voltage converter which will be converted to -12V direct currents.

       

      Then the ±12V power will be sent to the high-precision LDO (linear voltage regulator). Since the output voltage of the LDO selected is programmable (that is, the output voltage is variable), the ±12V power can be regulated to ±11V before being provided to the THX788+ amp circuit.

       

      By the way, there are 2 tips.

       

      1. The LDO is a linear regulator, so the output voltage must be lower than the input voltage. Therefore, if the input voltage is 10V, it is impossible to output 11V voltage, while 11V voltage is a sufficient and necessary condition to enable the enhanced over-ear headphone mode.

       

      2. The power consumption of the THX 788+ amp circuit is relatively large, so the current is relatively large when working. Therefore, the input and output voltage difference of the LDO that supplies power to the THX788+ must be large enough for a better voltage regulation effect.

       

      Therefore, the existing hardware design of the M17 cannot enable the enhanced over-ear headphone mode when powered by the battery.

      25. The power supply of the M17 under DC and BAT modes

      The desktop mode of the M17 benefits from the more abundant energy of the DC power supply, faster power response, and lower internal resistance of the power source. Also, the power supply of the internal amp has been increased to ±11V, and the driven capacity has reached a desktop-grade 3000mW+3000mW in balanced output.
      In addition, thanks to the DC mode, we also designed the BAT/DC switch. In the DC mode, the internal battery will not work. This helps to better protect the battery. Therefore, the M17 can be placed on the desktop for a long time and used as a desktop device yet without worrying that the battery would be degraded.

      Figure 1 is a schematic diagram of the energy flow under the battery power supply. Under the battery power supply mode, the M17 is completely battery-powered, so it is particularly convenient to take it around anywhere you want.



      Figure 2 shows the energy flow when plugging in a 12V/3A DC adapter, and the DC/BAT switch is at the BAT position. At this time, the M17 is powered by battery and DC hybrid power supplies. First, the 12V power source will flow into the battery through the internal circuit, and then the battery will power the whole device. We can imagine the battery as a large pool with water in and out. In the hybrid power supply mode, the battery capacity can be kept full at all times, which is suitable for use in short-term fixed scenarios. At this time, the battery life will be longer than in pure battery mode.



      Figure 3 shows the energy flow when plugging in a 12V/3A DC adapter, and the DC/BAT switch is at the DC position. At this time, the M17 is completely powered by the DC adapter, and the power supply of the internal THX788+ headphone amplifier is also increased to ±11V. So it can drive most headphones thanks to the larger voltage swing and output power. For sure, heat generation will be more serious in this mode. But don't worry, we can put the M17 on the included cooling fan stand for effective heat dissipation. In DC power supply mode, the battery life can be greatly extended because the battery is not involved in the working process at all. So we have no worries about the battery.

      26. What should I do if the M17 Fail to be charged or turned on?

      a. Hold the power button for about 10 seconds when it is charging

      b.Try other power adapters and charging cables.

      c.The battery of your device may be overused, so it needs to be refreshed through low-current power. It is suggested to charge it through the computer for more than 2 hours, and then unplug the charging cable to see whether it can be turned on.

      d. If the problem still exists, please try to leave the device aside for 2 to 3 days, and then charge it again. Because sometimes its system may be stuck, it would return to normal when the device runs out of power.

       

      If the above measures cannot help, please ask the local seller for help or contact us by sending an email to support@fiio.com with the receipt attached.

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