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Fiio X3 MARK III Portable Music Player


recommendedThis portable, easy-to-use Digital Audio player supports all major lossless audio codecs, and is jam-packed with incredible features.

SKU: FIIOX3MKIII Category: Tag: Brand:

For true audiophiles, cell phones that stream lossy, poor-quality audio over the Internet just won’t cut it. While most of the world has moved onto Spotify and YouTube for music, true music enthusiasts know that there’s no replacement for a lossless, high-quality MP3 player.

And the Fiio X3 Mark Ⅲ is an excellent choice. This portable, easy-to-use Digital Audio player supports all major lossless audio codecs, and is jam-packed with incredible features. Learn more below.

Lightweight, Convenient, And Easy-To-Use – The Fiio X3 Mark III!

The Fiio X3 Mark III is built to be a thoroughly modern Digital Audio player that takes inspiration from the popular MP3 players of yesteryear, such as the Zune and iPod. However, its features are far from old-fashioned and include:

  • Dual DACs – With dual PCM5242 DACs, you’ll get exceptional noise rejection, and a high Signal-to-Noise Ratio (SNR).
  • Hi-Res Audio Certified – The Japan Audio Society has awarded the Fiio X3 Mark Ⅲ “Hi-Res Audio” certification – their highest award for a natural, realistic listening experience.
  • Support For All Major Lossless Formats – From WAV to APE, WMA, FLAC, ALAC, and everything in-between, the Fiio X3 Mark III supports all major lossless audio formats.
  • Bluetooth 4.1 – With a high-quality F1C81 chipset, you’ll enjoy low-latency listening – even over wireless headphones!
  • Store Up To 8000 Lossless Songs – The Fiio X3 Mark III supports SD cards of up to 256gb – allowing you to store your entire library on a single card!
  • Intuitive, In-Line Controls – With an easy-to-use click wheel and navigation buttons, as well as the all-new “multi-function” button on the side of the unit, you’re always in control with the Fiio X3 Mark III!
  • Gorgeous Design – Manufactured out of a block of aluminium, and using only the highest-quality materials, the lightweight design and modern style of the Fiio X3 Mark III makes it both beautiful and functional.

Don’t settle for low-quality MP3 players, or for lossy streaming music. Take your listening experience to the next level – buy the Fiio X3 Mark III today!


General Specifications

Model/Number – X3 Mark III/ FX3321
Dimensions – 114mm×59 mm×12.8 mm
Weight – 126 g
Headphone Impedance Range – 16~150 Ω
Volume control type – 120 steps digital potentiometer
Display Screen – TFT 320×240
Equalizer – 10-band equalizer (±6dB)
Treble – N/A
Bass Boost – N/A
Balance – 5 dB
Gain Selection – High/Low
Headphone out (PO/LO/COAX Out) – 3.5mm headphone output jack
Analog Audio Output Jack(PO/LO/COAX Out) – 3.5mm headphone output jack
Digital Coaxial Out (PO/LO/COAX Out) – 3.5mm headphone output jack
Balanced Output – Supported (2.5mm balanced headphone jack)
USB DAC – Up to 192kHz/24bit supported
Bluetooth – Bluetooth V4.1
Chips used – SoC:JZ4760B, DAC:PCM5242 *2, LPF:OPA2140, OP:OPA1622

Partial Performance Parameters for Line Output

THD+N – ≤ 0.002% (1 kHz)
SNR – ≥113 dB (A-weighted)
Frequency Response – 5 Hz~70 kHz (-3dB)
Dynamic range – ≥107 dB
Crosstalk – ≥ 103 dB (10 KΩ/1 kHz)
Line output Level – 1.9 Vrms (10 KΩ/1 kHz)

Balanced headphone out specifications (2.5mm TRRS headphone out jack)

Output Power 1 – > 110 mW (16 Ω/THD+N<1%)
Output Impedance – <1.2Ω(32Ω loaded)
Output Power 2 – ≥ 190 mW (32 Ω/THD+N<1%)
Crosstalk – ≥97 dB (1 kHz)
Output Power 3 – ≥ 20 mW (300 Ω/THD+N<1%)
THD+N – ≤ 0.003% (1 kHz)
Frequency Response – 5 Hz~70 kHz (-3dB)
MAX. output voltage – >7.1 Vp-p
SNR – ≥112 dB (A-weighted)
MAX. output current – >145 mA (For reference)

Power and Battery

Power – Recommend DC5V 2A
Battery Capacity – 2350 mAh
Battery Display – Yes
Charging Time – <3 h (DC5V 2A)
Battery Life – approximately 10 hrs

Audio Format Supported


DSD:DSD64(.iso, .dsf和.dff)
APE(Fast): 192 kHz/24 bit;
APE(Normal): 96 kHz/24 bit;
APE (High): 96 kHz/24 bit;
FLAC: 192 kHz/24 bit;
WAV: 192 kHz/32 bit;
Aiff:192 kHz/32 bit;
Aif:192 kHz/24 bit;
WMA Lossless: 48 kHz/24 bit (to be supported by future update);
Apple Lossless: 192 kHz/24 bit;

Lossy compression:


Package Contents

  • 2x Screen protector
  • Micro-USB charging/data cable
  • User manual
  • Warranty card
  • Silicone case
  • Pleather case
  • COAX adapter cable