Regular price $99.00 Sale price $99.00 Regular price $99.00
Color Black
Version Standard
In stock
The HiBy FC4 is a portable USB DAC/headphone amp, with high driving power and MQA support.  Can be connected to smartphones / computers etc. for use as audio out!  High driving power, detailed and energetic sound make the FC4 stand out from the crowd.
Best Match : FC4 + Lightning Cable

Detailed Parameters

That sweet but powerful voice

Professional audio architecture, 340mW high driving power, 3.5mm SE and 4.4mm balanced output ports, dual DAC, MQA 16X, PCM768/DSD256 native decoding

HIBY FC4 portable USB DAC/headphone amp
Advantages of HIBY FC4 portable USB DAC/headphone amp

Portable USB DAC/headphone amp

Computer sound card, HiRes certified, low power consumption, all-metal body, Bauhaus design, hardware volume control, RGB indicator light

Portable USB DAC/headphone amp

Why use a USB dongle?

Recover a headphone port for your modern smartphone, giving voice to the large online library of lossless music available; higher detail compared to Bluetooth audio, hearing more musical details, bringing you back closer to the original music venue in experience.

Professional audio architecture

Containing circuitry on a level with professional full-scale HiBy Digital Audio Players, which is designed solely for high-res lossless music, replaying the original music in every detail, including all its energy and presence.

Professional audio architecture
Independent FPGA-based dual independent crystal oscillator reclocking

Independent FPGA-based dual independent crystal oscillator reclocking

Equipped with 45.158MHz and 49.152MHz dual dedicated audio crystal oscillators for effectively lower jitter, providing the whole audio system with a high precision, low jitter clock source.

Efficient USB receiver

Driven by a highly integrated 28nm USB receiver chip of high efficiency, with the 416M dedicated audio DSP onboard to realize the best balance between high performance and long runtime, effectively lowering consumption of smartphone's battery.

Efficient USB receiver
My dongle is powerful than yours

My dongle is powerful than yours

340mW+340mW @32Ω is nearly unheard of for a USB dongle but here it is! Easily drive all your HiFi earphones and even some full-size headphones! High driving power is the stuff of miracles! It will let your earphones handle all music styles with more aplomb than ever, a higher sense of energy without sacrificing any fine control or detail!

High performance by the numbers

High SNR, low absolute noise level and low THD all at the forefront of products of this class, making for a faithful rendition of the great music at your fingertips on a black canvas.

High performance by the numbers
MQA 16X unfolding

MQA 16X unfolding

The HiBy FC4 includes MQA technology*, which enables you to play back MQA audio files and streams by a factor of 16x, delivering the sound of the original master recording.

ES9219's integrated DAC supports MQA full decoding of 16x unfolding.

*The smartphone must be using apps supporting bitperfect and MQA (e.g. HiByMusic, TIDAL), in order for MQA unfolding to occur with the HiBy FC4 connected via USB.

Dual ES9219 DACs

Equipped with 2 of ESS technologies’ renowned ES9219 DAC chips, set to output to each channel independently, their strong decoding power not letting go of a single musical detail.

Dual ES9219 DACs
Hi-res support

Hi-res support

Supporting up to PCM768kHz/32bit, DSD256 (native) decoding, edging on professional HiFi in decoding specifications, this will have no problems decoding all your usual lossless streaming formats.

3.5mm SE and 4.4mm balanced brought together

Includes 3.5mm SE and 4.4mm balanced ports--balanced in position too! The attention to detail inspires confidence.

3.5mm SE and 4.4mm balanced brought together
Software integration

Software integration

Seamlessly integrating with HiByMusic app’s USB exclusive mode, be confident of your smartphone’s bitperfect audio output to the FC4, fully unleashing the FC4’s hardware decoding / amplification power.

The HiByMusic App is a professional app for Hi-Res audio playback on Android and iOS, with over 3 million users worldwide, and its USB exclusive mode coupled with external USB DAC/headphone amps garners widespread praise from HiFi aficionados all around.

All-platform support

Supports use on Android / iOS / Mac / Windows as USB dongle / computer external soundcard. No charging required, driver-free plug-and-play.

Driver-free plug-and-play on Android / iOS / Mac / Windows 10

All-platform support
Hi-Res certified for hi-quality sound

Hi-Res certified for hi-quality sound

Hi-Res certification your guaranteed ticket to good sound!

All-metal body

All-metal body in Bauhaus design language, black with luxurious gold trim.

All-metal body
Hardware volume buttons / hardware volume

Hardware volume buttons / hardware volume

30-step physical hardware volume button controlling hardware volume controller for best adaptability and lossless volume control.

RGB indicator light

Displaying different colours depending on what is being played:

Green: MQA

Blue: MQA Studio

Magenta: MQA Rendering

Yellow: ≤48k

Aqua: 64k-192k

Orange: 352.8k or above

White: DSD Red: Paused

Hardware specifications

Model HiBy FC4
Dimensions 65.3*22.1*11.9 mm
Weight 21.7 g
Chipset ES9219 * 2
Buttons Volume up / down
Supported formats PCM up to 768kHz/32bit, up to DSD256 native
RGB indicator light Status indicator
USB port Type-C
Headphone out 3.5mm TRS and CTIA-spec TRRS headsets
Balanced headphone out 4.4mm balanced
Audio specifications
Table header 0 3.5mm PO 4.4mm BAL
Output Level 1.9Vrms (32Ω) 3.3Vrms (32Ω)
Output Power 110mW (32Ω) 340mW (32Ω)
THD+N 0.0008% (32Ω) 0.0006% (32Ω)
Noise 1.7μVrms (32Ω) 2.2μVrms (32Ω)
SNR 120dB (32Ω) 123 dB (32Ω)
Dynamic Range 120dB (32Ω) 123 dB (32Ω)
Crosstalk Rejection 72dB (32Ω) 98 dB (32Ω)
Frequency response (-3dB) 20-90Khz (32Ω)

20-90Khz (32Ω)

What's in the box
①USB Type A to Type C interconnect 
②FC4 DAC/headphone amp product proper 
③Type-C to Type-C interconnect 
④Product packaging 
 ⑤User manual / warranty / certificate
* MQA Subscription Voucher
What's in the DAC FC4 box