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Fiio X5 3rd Gen Portable Music Player


recommendedFiio X5 3rd Gen Android-based, Mastering Quality Lossless Playback Portable Digital Music Player.

SKU: X53G Category: Tag: Brand:

With a wide range of music players, earphone, accessories and more, Fiio is well-known for raising the bar high in the music market. They have introduced various innovative and improved products in their recent launch including Fiio X5 3rd Gen, which looks promising. It comes as an Android-based lossless playback portable music player with mastering quality.

Dual DACs

The Fiio X5 3rd Gen consists of two best-in-the-class AKM AK4490EN DACs – for each channel. The AK4490EN is supportive to all PCM and DSD formats and is part of a new generation of high-quality 32-bit DACs. The DAC chips ideally reproduce your music with a dual-channel implementation of AKM’s unique VELVET SOUND low distraction architecture, including digital filtering with 32-bit processing.

First-Rate Amplification

The X5 3rd gen features four-way LPF to provide superior amplification. It has the great ability to deal with capacitive loads and offers greater power output. For amplification and low-pass filtering stage, it utilises its two dual-channel chips and a custom-made audiophile-grade OPA426 chip. This new X5 comes with best-in-class sound quality as it is the result of finest work delivered by engineers at Fiio.

Efficient Music Playback with Android 5.1 OS

This new music player is superbly designed with entire new audio software architecture to run smoothly with its deeply customised and optimized version of the Android 5.1 OS. It allows better sound quality and overall performance of the device. Its battery life is also much better than the ones running under Android 4.4, and it is able to render 90 more minutes of battery life than them. It is host to two headphone outputs – one single ended, and the other balanced. The X5 3rd gen comes with two modes of operation as well – Android mode and Pure Music Mode. All in all, it ensures both versatility and pure music.


Main Unit

Name / Model No. – X5 3rd gen(FX5321)
Operating System – Deeply customized Android 5.1.1
CPU Model – RK3188
No. of cores – 4
CPU operating frequency – 1.4GHz
DAC – AK4490
Keyboard – Virtual QWERTY keyboard
Input method – Touchscreen
Special features – Dual Android / Pure Music operating modes, symmetrical remappable keys, USB DAC, docking connector, etc.
User Interface – Android 5.1.1 / FiiO Music
Chips used – SoC: RK3188, DAC: AK4490x2, LPF: OPA1642x2, OP: Customized OPA426x2


WIFI – 2.4GHz IEEE802.11 b/g/n standards supported
Bluetooth – Bluetooth V4.0,aptX supported
USB – Micro USB2.0

Display screen

Display size – 3.97 inches
Number of colours – 16.7 million colors
Display type – IPS TFT
Viewable angle – 178°
Resolution – 480×800
Pixel density – 233 ppi
Touchscreen – Yes


Total ROM – 32GB
Storage expansion type – Micro SD
ROM available to user – About 26G
Maximum storage expansion – 512GB (256GB x 2)

Buttons and ports

Buttons – Side buttons + side volume wheel+ touchscreen
Custom key mapping – N/A
Headphone out – 3.5mm standard headphone output jack
Balanced output – Supported (2.5mm balanced headphone jack)
Line out – Standard 3.5mm port (shared LO/Coaxial out)
USB connection – Micro USB2.0 (charging / data transfer / docking function / USB DAC)
Digital Coaxial out – Standard 3.5mm port(shared LO/Coaxial out)


Dimensions – 114.2 mm× 66.2 mm× 14.8 mm
Weight – 186g
Volume control – 120 steps +/- button control (via analog-domain controller
Recommended headphone impedance – 16~150 Ω
Equalizer – 10-band EQ (±6dB), 9 presets+custom preset, ViPER Effect
Bass boost – N/A
Treble boost – N/A
Balance control – 10 dB
Gain control – Low/High
USB DAC – Up to 192kHz/24bit supported

Power specifications

USB power adapter – DC 12/1.5A, 9V/2A, 5V/2A recommended
Battery – Internal 3400 mAh High-voltage quick charging Li-polymer battery
Charging indication – via LCD display, and the onscreen battery gauge stops moving after fully charged
Charging time – <2 h (DC 12V/1.5A)
<3 h (DC 5V/2A)
Battery indication – Yes (accurate battery % readings)


Firmware Upgrade – supported both via zip file and OTA
Font size – Changeabl – No limit (recommended to install the apps listed on FiiO Market)

Line output specifications

THD+N – <0.0009% (1 kHz/10kΩ)
SNR – ≥120 dB (A-weighted)
Frequency response – 5 Hz~55 kHz(-3dB)
Dynamic range – >117 dB
Channel separation – >98 dB (1 kHz)
Line level – >1.8Vrms

Headphone out specifications (3.5mm headphone out jack)

Output power 1 – ≥480 mW(16Ω / THD+N<1%)
Output impedance – <1Ω (32Ω loaded)
Output power 2 – ≥250 mW(32Ω /THD+N<1%)
Channel separation – >73 dB (1 kHz)
Output power 3 – ≥28 mW(300Ω / THD+N<1%)
THD+N – <0.003% (1 kHz)
Frequency response – 5 Hz~55 kHz(-3dB)
Peak output voltage – >8 Vp-p
SNR – ≥115 dB (A-weighted)
Max. output current – 250mA (For reference)

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

Output power 1 – ≥400 mW(16Ω / THD+N<1%)
Output impedance – <3Ω (32Ω loaded)
Output power 2 – ≥240 mW(32Ω /THD+N<1%)
Channel separation – ≥98 dB (1 kHz)
Output power 3 – ≥26 mW(300Ω / THD+N<1%)
THD+N – <0.003% (1 kHz)
Frequency response – 5 Hz~55kHz(-3dB)
Peak output voltage – >7.5 Vp-p
SNR – ≥111 dB (A-weighted)
Max. output current – >250 mA (For reference)

File format support


DSD:DSD64/128(”.iso”, “.dsf”, “.dff”)
APE FAST/High/Normal:384kHz/24bit(MAX)
APE Extra High:192kHz/24bit(MAX)
APE Insane:48kHz/24bit(MAX)
Apple Lossless:384kHz/24bit(MAX)

Lossy compression: