Digital audio player fiio x3 gen 2 1
Digital audio player fiio x3 gen 2 2Digital audio player fiio x3 gen 2

Digital Audio Player FiiO X3K


This portable music player which can support five main music formats and original master copy at 192K/24BIT, aiming to help music lovers find the ever lost sound. The X3II/X3K is lightweight and portable with high quality HD sound and a 128GB Memory The X3 is compatible with APE, FLAC. ALAC, WMA and WAV files which so far is the most complete unit on the market.

Product Description

Build & Operation:

The X3K is well built, FIIO products all are, however the original X3 feels a tiny bit better, I really like the black brushed metal look and feel. And the Control circle in the middle of the X3K is a tiny bit flimsy. Also it is worthy to mention that the plastic cover provided with the X3K feels and is better than the one provided with the X3. That said, when it comes to operating the 2, this is when the differences start to merge, the X3K is way much better to handle than the X3, at least the buttons on the X3K make sense and although something still feels strange or missing one will get used to operating it using muscle memory within less than an hour. I had the X3 for more than a year and I still sometimes miss use its buttons.

The operating menus and functionalists of both devices are technically similar, if you are used to the X3 you will feel right at home with the new version, especially if you have upgraded to the firmware V3. Battery life of the X3K was as expected, it lasted me a few days of heavy use and recharging it didn’t take a long time and i was back to business.

Audio Quality:

I guess it all comes down to the Audio quality and i must say that i am impressed. My method of testing does not involve playing a specific song or list of songs and comparing them one by one between two sources, what i do is just listen to my music the same way i always do while working and i usually start noticing things in the music; good or bad; and if something popped out too much and caught my attention I’d change the music source and listen to the same song on the other device to check out what the story was all about.

I was listening to the album “Still on Top” by Van Morrison which i knew by heart. But right away details started catching my attention, the sound of the high hats, the bass guitar and all the brass sounded different, sounded more detailed and layered, not to mention the sound stage which was noticeably more spacious. I went back to the X3 just to make an A-B comparison and it was confirmed, there is a difference between the 2 and it is very noticeable. After that i didn’t go back to my old X3

Technical Specifications:
  • Screen:  2.4inch  Colour TFT 240 x 320 Screen resolution
  • Material: Aluminum alloy
  • Power Supply: Micro USB Port, 3000mAh 3.7V Lithium Polymer battery
  • Memory: External 128GB (SD Card not included)
  • Headphone: 3.5mm
  • LO Output: 3.5mm
  • Digital Output: 3.5mm Coaxial Output
  • Output Power: 200mW(@32Ω)224mW(@16Ω)24mW (@300Ω)
  • Output Level: Recommended headphone impedance, 16Ω~150Ω
  • THD+N:     < 0.0015% (at headphone out with 32Ω load)
  • SNR: >113 dB (A-weighted)
  • Frequency Response:   +/- 0.1dB 20 Hz~20 kHz
  • Output Impedance:    <0.2 Ω
  • Gain:  >6 dB
  • MAX output voltage:  > 7.5 Vp-p
  • MAX output current:   > 84 mA
  • Working Time:    >11 h
  • Charging Time:   < 3 h (DC 5V, 2A)
  • Input Power: DC 5V, 2A (Recommend)
  • Battery Capacity:      2600 mAh

Audio formats supported:

  • DSD: DSD64, DSD128 (.dsf &.dff)
  • PCM:Lossless: APE FAST 192 kHz/24 bit: APE Normal, High 96 kHz/24 bit(MAX)
  • FLAC: 192 kHz/24 bit(MAX)
  • WAV: 192 kHz/24 bit(MAX)
  • WMA Lossless: 96 kHz/24 bit(MAX)
  • Apple Lossless: 192 kHz/24 bit(MAX)
  • Lossy compression: MP2, MP3, AAC, ALAC, WMA, OGG.
  • Unit size:  96.7mm × 57.7mm × 16.1mm
  • Weight:  Unit 135g. Including packaging: 325g

Additional Information

Weight 1 kg
Dimensions 30 x 30 x 10 cm


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