FiiO M9 High-Resolution Audio Player and DAC - Black

Samma3a Rating:
82% of 100

The M9 offers a plethora of features being an audio player that can transmit HWA/aptX/aptX HD/LDAC lossless Bluetooth codecs even when used as a USB DAC. It supports virtually all Bluetooth formats with its Bluetooth 4.2 such as 24-bit aptX HD, LDAC and HWA and has dual AK4490EN DACs that has high signal-to-noise ratio, great dynamic range and low distortion for a precise sound signature. Meanwhile, a A3P030 FPGA ensures that music is played back accurately no matter the sample rate with stabilization using digital clock signals and even decodes DSD64/128 in hardware. It also has an 8-layer HDI PCB to ensure excellent sound quality and a specially designed audio circuit with balanced and single-ended outputs. 

Using M9 allows users to get their music from anywhere whenever they want with Wi-Fi, DLNA that allows for listening on computers and even have built-in streaming apps. Its battery lasts for 10 hours of playback but can go for 45 days when on standby mode. The M9 has both 3.5mm and 2.5mm balanced audio jacks and also supports CTIA (Android headsets) and iOS headsets. A nice addition is its RGB light indicator that changes color depending on the audio format being played and also indicates low battery with a red light. However, unlike most players, the M9 is capable of being used as an asynchronous USB DAC with both Macs and Windows PCs and can also acts as the computer’s Bluetooth transmitter.

The Android OS give users easy navigation with the carefully thought out user interface with some of the pre-installed apps being NetEase, Cloud Music, MOOV, Tidal and KKBOXS while it has a USB Type C connector which enables charging and file management when connected to other devices.

  • Hi-Res Audio
  • USB audio and coaxial (SPIDF) out support
  • USB DAC functionality
  • Aluminum body
  • 3.2 inch (8 cm) LG IPS touchscreen
  • 2 GB storage (up to 2TB with microSD cards)
  • Exynos 7270 and dual AK4490EN
  • Wi-Fi music streaming, Bluetooth 4.2 (aptX/aptX-HD), USB audio
  • LDAC
  • Native DSD Support
  • 2-way USB Type C
  • 10 hours playback, 45 days standby
  • OTA Firmware Update
  • Comes with a TPU case and USB cable
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Technical Specification

  • Type: High-Resolution Audio Player
  • Dimensions: 60mm*106mm*13.3mm
  • Weight: about 133g     
  • Volume control 120 steps +/- button control
  • Recommended headphone impedance: 16~300Ω         
  • Equalizer: 10-band EQ (±6dB), 9 presets+custom preset
  • Treble control: N/A      
  • Bass boost: N/A
  • Balance control: ±5dB
  • Gain control: L/H
  • USB DAC: Asynchronous 192kHz/32bit 
  • USB Audio: DSD64/128,DoP/D2P
  • Display size: 3.2 inches (8cm)   
  • Display type: LG IPS screen      
  • Resolution: 480×800   
  • Touchscreen: 5-finger multi-touch                    
  • RAM: 768MB   
  • ROM: 4GB
  • Storage expansion type Micro SD card   ROM available to user   2GB
  • Maximum storage expansion: Theoretically 2TB (only one micro SD card slot)                 
  • Headphone out (PO)     3.5 mm headphone jack+2.5mm balanced headphone jack       
  • USB: Two-way TYPE C USB2.0(Charging/Data transmission/USB DAC/USB Audio)
  • Line out (LO): 3.5 mm port (shared PO)         
  • SPDIF output: 3.5mm port (shared PO)
  • WiFi: 2.4G,WiFi transmission supported
  • Bluetooth:4.2
  • USB connectivity: TYPE C Two-way USB2.0        
  • Bluetooth transmit: LDAC/aptX/aptX HD/SBC(Available when playing on M9 or using M9 as USB DAC)
  • HWA connectivity (LHDC):Available when playing on M9 or using M9 as USB DAC
  • Bluetooth receive: SBC/LDAC to be supported
  • AirPlay: To be supported
  • DLNA: Supports Windows for now, will support more in the future
  • FLYLINK : To be supported
  • USB power adapter: DC 5V/2A recommended  
  • Battery capacity: 2350mAh Li-polymer battery
  • Charging time: <2h(DC5V/2A)
  • Deep sleep time: 45 days
  • Line output specifications
  • THD+N:<0.002%(1kHz/10kΩ)        
  • SNR: ≥117dB (A-weighted)
  • Frequency response: 5Hz~80 kHz(-3dB)       
  • Noise floor: <5uV
  • Channel separation: >105dB  
  • Line level: 2V
  • Headphone out specifications 13.5mm port
  • Output power 1 : ≥125mW(16Ω / THD+N<1%)          
  • Output power 2: ≥170mW(32Ω /THD+N<1%)
  • Output power 3: ≥19mW(300Ω / THD+N<1%)
  • Output impedance: <2Ω
  • THD+N: <0.002%(1kHz/32Ω)
  • Separation: >72dB
  • Frequency response     5Hz~80 kHz(-3dB)    Peak output voltage     6.5Vp-p
  • SNR: ≥118dB (A-weighted)
  • Noise floor: <5uV
  • Headphone out specifications 22.5mm port
  • Output power 1:≥125mW(16Ω / THD+N<1%)
  • Output power 2: ≥195mW(32Ω /THD+N<1% balanced turbo off), ≥220mW(32Ω /THD+N<1%,balanced turbo on)
  • Output power 3: ≥24mW(300Ω / THD+N<1% balanced turbo off), ≥77mW(300Ω / THD+N<1%,balanced turbo on)          
  • Frequency response: 5Hz~80 kHz(-3dB)       
  • SNR: ≥113dB (A-weighted)       
  • Output impedance: <2Ω
  • THD+N: <0.002%(1kHz/32Ω)
  • Separation: >98dB
  • Peak output voltage: 7.07Vp-p
  • Noise floor: <10uV
  • File format support - Lossless: DSD:DSD64,128(iso”“.dsf”,“.dff”), APE(Fast): 192 kHz/24 bit, APE(Normal): 192 kHz/24 bit, APE (High): 192kHz/24 bit, APE (Extra High): 48kHz/24 bit, APE (Insane): 48kHz/24 bit, FLAC: 192 kHz/24 bit, WAV: 192 kHz/64 bit, Aiff:192 kHz/24 bit, Aif:192 kHz/24 bit, WMA Lossless: 96 kHz/24 bit, Apple Lossless: 192 kHz/24 bit
  • Lossless: MP3,OGG,WMA,AAC...
  • Warranty: 1 year

What Is In The Box

  • Tempered glass screen protector (applied on M9 factory)
  • USB cable
  • Coaxial adaptor cable
  • Warranty card
  • Quick start guide
  • Clear case


Manufacture Description


The Ultimate in Versatility

Portable High-Resolution Audio Player

*Pictures are for illustration only, actual product may vary


A player that does it all

When developing the M9, we at FiiO saw that there wasn't any one player that combined all of the functions people want. Was there a player that could transmit the HWA/aptX/aptX HD/LDAC lossless Bluetooth codecs, even when used as a USB DAC? What about something that also contained a highly optimized audio circuit for excellent sound quality? Did any players also give the user an experience worthy of a flagship, capable of many features including Wi-Fi music streaming all in a slick interface? We sought to change that with the M9 – which does all of this and more.


The M9 uses Bluetooth 4.2 and supports virtually all Bluetooth formats including the high-resolution ones for your ultimate listening pleasure, including: 24-bit aptX HD (also backwards compatible with aptX), LDAC, and HWA. 

Bluetooth audio unleashed with full format support

As a Bluetooth transmitter: LDAC/aptX/aptX HD/SBC (both natively from the player and through USB DAC)

As a Bluetooth receiver: SBC (LDAC to be added with software updates)


The two AK4490EN DACs employed in the M9 feature a high signal-to-noise ratio, exceptional dynamic range, and low distortion – making for a precise yet exciting sound signature.

Dual AK4490EN DACs for superb decoding performance


Built-in dedicated FPGA with DSD128 hardware decoding

Inside the M9 is a high-performance A3P030 FPGA, responsible for ensuring your music (whatever sample rate) is played back accurately by stabilizing digital clock signals. The FPGA also decodes DSD64/128 in hardware, which the M9 supports in ISO/DFF/DSF formats.


Eight-layer HDI PCB ensures excellent sound quality

For the first time, in the M9 FiiO uses an eight-layer HDI (High Density Interconnect) PCB with a thickness of only 0.08mm. While the M9 PCB is more complex than the one in the M7, it also allows more components to be integrated into a smaller space, leading to a smaller PCB and a smaller device overall. Combined with the fact that the M9 PCB is L-shaped, similar to modern smartphones, and you have a recipe for outstanding sound quality.


The TI OPA1612 is used as the LPF, while the TI OPA1622 serves as the current buffer. To achieve single-ended and balanced output, there are two OPA1622 op-amps used that provide up to 77mW* of power under a 300Ω load.

Specially-designed audio circuit with balanced and single-ended outputs

*Under balanced output

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