Fiio M3K -Affordable Musical Bliss

Many people are willing to use a bigger screen smart phone right now. But at my deep heart, the most classical screen smart phone was Iphone 4s, which was created by Steve Jobs.

The same thing happen in the DAP market, many audiophile are also pursuing a bigger screen. 

However, I know that there are some users like me, looking for a One-hand-control DAP with satisfactory sound.  So, Fiio M3K will be a good choice for those people.

Well, without wasting anymore time, let’s jump on to the latest audio player.

What is the main feature of Fiio M3K ? 

  • Powered by Ingenic X1000E Soc processor
  • Using AKM AK4376A DAC
  • 110mAH battery , up to 26 hours battery life and 38 days standby time
  • Hifi Recording function
  • Full formats support , PCM up to 384kHZ/32-bit
  • Asynchronous USB DAC supports up to 192kHz/24 bit audio
  • Capacitive buttons + touchpad for operation
  • Micro SD card expansion
  • Clock function
  • Hi-Res Audio certified
  • Up to 2TB of storage expansion


The design of M3K is derived from X1II but with a much smaller size and you could easily handle it with one hand. It’s using the aluminum alloy shell and full lamination tempered glass making it look and feel better.


As an entry level player, Fiio M3K uses the Ingenic X1000E Soc and it should be the cheapest player that uses the X1000E Soc on the market now. 

With the X1000E Soc, M3K has full formats support including APE,WAV,WMA, DFF, DSF and so on.

Do you know why Fiio named this player M3K but not M3 MKII?

It is because M3K would be more simple and easier to remember comparing with M3 Mark II, M3MK2, M3MKII. What do you think?

M3K uses the AK4376A DAC and could support up to 384kHz/32bit music. It is the first time that we saw the portable player using AK4376A, but we have to tell that it produce a good sound upon the first impression. Very low noise floor and very low distortion , high power output. 

Does M3K support Bluetooth? No.

Support formatsDSD 64, APE, AIFF, Flac, WAV, MP3, WMA, OGG, M4A, ALAC, ISO, DFF, DSF
Operating SystemLinux
Chips used SoCIngenic X1000/E
CPU model Ingenic X1000/E,40nm
CPU operating frequency1GHz
Analog Audio Output3.5mm headphone output jack
Lineout No
Digital Out (Coaxial)No
InputsUSB Micro USB.(Charging/Data transfer/OTG/USB DAC)
Screen 2.0 inch IPS TFT 240×320
Bluetooth No
Wifi No
Gapless Yes
Expand StorageTheoretically 2TB (only one micro SD card slot)
Built-in MemoryNo
Impedance 16-100Ω
Headphone out specificationsOutput power 1 ≥42mW(16Ω / THD+N<1%)
Output power 2 ≥25mW(32Ω /THD+N<1%)
Frequency response5Hz~90 kHz(-3dB)
SNR≥117dB (A-weighted)
Output impedance <1Ω(32Ω)
THD+N <0.004%(1kHz/32Ω)
Noise floor <2uV
Peak output voltage2.46Vp-p
Charging time <2.5 h (DC5V/2A)
Battery Capacity 1100mAh
Equalizer5-band EQ (±6dB),7 presets
Fiio M3K Audio Player

Software Impressions

The interior UI is well set up and easy to navigate. Although, the vertical touchpad is very sensitive and can scroll too fast at times. The M3K is shockingly fast with a manual microSD scan, which likely comes from the “powerful” X1000E CPU. And yes, it is powerful.

Is there audiobook and podcast support in M3K?

No, because audiobook  refused to license to any 3rd party non-android products

Noise floor

Many customers are caring about the noise floor and this time Fiio manage to lower the noise floor of M3K than 2uV. M3K may has the lowest noise floor in the world depended their test.

Fiio M3K Lossless Audio Player


Battery life is very important for any electronic product, but this won’t be a problem on M3k. Fiio M3K could hold up to 26 hours playback and 38 days standby time.


One of the important features of M3K is that it could support recording function, which is quite useful to students and media.

Does the headphone jack also provide a line level output?

No, line out output is not included.

You might be wondering the difference between M3 and M3K.

Material PlasticAluminum Alloy
CPUACTS ATJ2129Ingenic X1000E
Battery Capacity550mAh1100mAh
Battery life>24 hours> 26 hours
Standby time/33 days
Expand Storage 64GB512GB
DSDNot supported Supports DSD64
Support FormatAPE, Flac, Wav, MP3, WMA, OGG, M4ADSD 64, APE, AIFF, Flac, WAV, MP3, WMA, OGG, M4A, ALAC, ISO, DFF, DSF
Sampling rate up to 96Khz/24bit384kHz/32bit
Distortion <0.008%(1 kHz)<0.004%(1 kHz)
Noise floor<10uV<2uV
Recently Added /Supported
Recording /Supported