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FiiO X3 (2nd Gen) Lossless Portable Digital Audio Player & DAC

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  • All new digital audio architecture with native DSD support

  • Lossless playback for APE/FLAC/ALAC/AAC/WMA/WAV files

  • Audiophile-grade components with Cirrus Logic CS4398 DAC

  • Updated design with all-metal chassis and fine grained matte finish

  • 11hours playback time with standard USB charging

FiiO X3 (2nd Gen) Lossless Portable Digital Audio Player & DAC

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FiiO X3 (2nd Generation)

FiiO continuously refines and improves its high-resolution digital audio players and the latest edition X3 2nd Generation DAP has received a complete regeneration. With a magnitude of added enhancements including upgraded audio architecture, improved exterior design and enhanced usability the rejuvenated X3 2nd Gen lossless audio player and DAC is the portable solution for true music enthusiasts.

Utilising a Cirrus Logic CS4398 DAC and coupled to a finely tuned low-pass filter the X3 MK-II offers extremely low noise and phase distortion. With capacitors made of tantalum, a lustrous metallic element with high resistance, the analogue circuit provide minimal internal resistance. Dual crystal oscillators ensure the lowest jitter and highest precision playback of music at any sample rate.

FiiO X3 2nd Gen incorporates an audiophile grade architecture and premium components capable of playing files up to 24-bit/192 kHz in a variety of formats including native DSD, WAV, WMA, ALAC, FLAC, APE, AIFF, and more.

X3 II also incorporates an improved user interface with six unique themes, while the classic scroll wheel and TFT display provides easy navigation, which supports browsing and playback. The 10-band graphic EQ and the 120-step digital volume control allow for custom tailored sound and levels.

Perpetual sonic elation.

FiiO X3 2nd Generation DAP


Dual Crystal Oscillators
Dual crystal oscillators dedicated to multiples of 44.1 and 48kHz respectively, ensuring lowest jitter and highest precision for playback of music at all sample rates and eliminating all conversion artefacts.

Audiophile-Grade Components
Utilising Cirrus Logic's top-flight CS4398 DAC coupled with carefully tuned low-pass filter, the X3 2nd Gen produces extremely low noise and phase distortion. Premium tantalum capacitors in the analogue circuit enable minimum internal resistance for high-grade and uncoloured sound.

Power Management
Newly added hibernation mode offers instant-on playback while the coulomb meter integrated in the battery enables accurate battery percentage readings. The power button sits flush with chassis to avoid accidental activation while remaining easy to press and the volume button now includes tactile marker for easy operation even in your pocket.

Better Build and UI
With all-metal chassis and high reflectance fine-grain faceplate brings fit and finish to another level. Unique Titanium colour conveys a fresh appearance to the X3 II. The classic scroll wheel operation and six unique UI themes to choose allow the X3 2nd Gen to offer an intuitive and personal user experience.

Complete Ports
Regular 3.5mm headphone out and composite coaxial/line-out port for connection to external amps, DACs and other audio and Hi-Fi equipment. Fitted with micro-USB 2.0 port for charging, data transfer and docking to future FiiO devices.


 FiiO X3 2nd Generation DAP




  • Line Out: 3.5mm (Shared line out / S/PDIF coaxial out)
  • Digital Output: 3.5mm (Shared line out / S/PDIF coaxial out)
  • DAC: USB DAC supports up to 24-bit / 192kHz and DSD (driver installation required)
  • Headphone: 3.5mm

Line Output

  • THD + N: <0.001% (1kHz)
  • Frequency Response: 20Hz to 20kHz
  • Crosstalk: >102dB (10kΩ / 1kHz)
  • Signal to Noise Ratio (SNR): ≥114dB (A-weight)
  • Dynamic Range: ≥101dB
  • Line Output Level: 1.45Vrms (10kΩ / 1kHz)

Headphone Output

  • Output Power 1: >224mW (16Ω / THD+N <1%)
  • Output Power 2: >200mW (32Ω / THD+N <1%)
  • Output Power 3: >24mW (300Ω /THD+N <1%)
  • Frequency Response: 20Hz to 20kHz
  • Signal-to-Noise Ratio (SNR): ≥113dB (A-weighted)
  • Output Impedance: <0.2Ω (32Ω)
  • Crosstalk: >74dB (1kHz)
  • THD+N: <0.001% (1kHz)
  • Maximum Output Voltage: >7.2Vp-p
  • Maximum Output Current: >75mA (For reference)

Power and Battery

  • USB Charger: 5V DC 2A (recommended)
  • Computer USB Port: 450mA
  • Battery Charge Display: Red light indicates charging, green light turns on after fully charged
  • Battery Display: Yes (accurate battery % readings)
  • Battery Capacity: 2600mAh, 3.7V Li-polymer
  • Battery Life: >11h (32Ω; normal volume with display off )
  • Charging Time via Computer USB Port: Approximately 8 hours
  • Charging Time via 2A USB Charger: Approximately 3 hours

Supported Audio Formats

  • DSD: DSD64, DSD128 (.iso/.dsf /.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/64-bit
  • WMA Lossless: 96 kHz/24-bit
  • Apple Lossless: 192 kHz/24-bit
  • Lossy Compressions: MP2, MP3, AAC, ALAC, WMA, OGG

General Specifications

  • Construction Material: Aluminium Alloy
  • Chipset: SoC: JZ4760B, DAC: CS4398, LPF: OPA1642, OP: OPA1642+LMH6643
  • Memory Capacity: 128GB via microSD Card
  • Display: 2.0" (5cm) TFT screen, 320 x 240 pixels
  • Drive Ability: 16 to 150 Ω
  • Volume Control: 120 steps digital potentiometer
  • Equalizer: 10-band equalizer
  • Balance Control: 5dB
  • Gain:Gain Low: 2.6dB
  • Gain High: 8.6dB
  • Dimensions (L x H x D): 96.7 x 57.7 x 16.1 mm
  • Weight: 135g



  • Next generation high-definition portable digital music player and DAC
  • Regenerated version of hailed X3 DAP
  • Supports digital master copy source at 192kHz/24bit
  • Native DSD and Lossless playback for APE/FLAC/ALAC/AAC/WMA/WAV files
  • Can be used as stand-alone digital-to-analogue converter
  • MicroSD card slot supports up to 128GB storage capacity
  • Outputs include headphone out, line-out and coaxial digital out
  • Cirrus Logic CS4398 DAC chip
  • 11hours playback time with standard USB smart charging
  • Includes black protective silicone case

FiiO X3 2nd Generation DAP



  • Regenerated exterior design with full metal chassis
  • More refined and balanced sound tuning
  • Refreshed user interface design
  • Overhauled digital audio architecture for less jitter
  • Improved hardware DSD decoding, added in-line remote support, enhanced 10-band EQ, custom playlists
  • Advanced power management features including hibernation mode for instant-on usage without battery drain
  • Enhanced coulomb meter shows detailed battery information



  • FiiO X3 (2nd Gen) High Resolution Digital Audio Player & DAC
  • High-current micro USB and charging cable (1m)
  • 3.5mm Coaxial S/PDIF adaptor
  • 2x screen protectors
  • 3x Bodywork stickers (USA Flag, Wood Grain, Carbon Fibre)
  • Black silicone case
  • User manual
Product TypePortable Audio Player
Feature KeywordPortable, Rechargeable
Recommended UseDigital audio player, Portable audio system
Manufacturer Warranty2 Years
Included AccessoriesHigh-current micro USB and charging cable (1m), 3.5mm Coaxial S/PDIF adaptor, 2x screen protectors, 3x Bodywork stickers, Black silicone case, User manual
Part NumberX3 II

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