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.
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Customer Reviews
Android Lossless Digital Music Player
Dual ES9038Q2M, Snapdragon 660 SoC, 5.0'' 1080P large hi-res display, Open Android 9, MQA 16x unfolding, DSD512, 4GB RAM + 64GB storage


Sound of Harmony
Delivers a balanced yet inspiring audio performance in bold, muscular visual fashion, while providing a silky smooth and snappy user interface.

A classic revamped
The R6 redesigned with the new R series design language—bold, muscular straight lines.

Japanese Alps rotary encoder
Japanese Alps rotary encoder for smooth volume adjustments.

Fast and mature SoC
Utilizing an upgraded Snapdragon 660 SoC, the R6 has speed and stability in spades, as can be expected when combined with the mature Android HiBy OS.
4nm LPP process; class-leading 8-core Kryo 260 architecture; speeds up to 2.2GHz; Adreno 512 GPU. 4GB RAM + 64GB storage + up to 2TB storage expansion via micro SD card.

Dual ES9038Q2M
Upgraded to dual ES9038Q2M with native support for DSD512, 32bit / 768kHz, both DACs in operation for both SE and balanced output! Utilizes current-mode output for even better noise rejection—for the cleanest backgrounds to your pure listening enjoyment.

Dual crystal oscillators
High-accuracy, low-phase-noise crystal oscillators dedicated to 45.1584and 49.152MHz, for flawless low-jitter performance for music at any sample rate.

All new power supply circuit design
Line and amplification stages driven by two independent isolated power supplies for cleaner, more powerful dynamics.

Audio circuit design
OPA 1612 as the line stages, coupled with low-ESR Panasonic POSCAPs and pro-audio grade Elna caps for a balanced yet inspiring audio performance that easily handles all music genres.

Multiple audio outputs
Both 3.5mm SE and 4.4mm balanced ports can act both as line out and headphone outputs. Drive headphones directly, drive a headphone amp, drive an outboard DAC… the sky's the limit.

1080p large hi-res display
A graphical performance as finely detailed and colour-accurate as the audio! 5.0” Corning Gorilla glass; 1920x1080 resolution; 443ppi; 16:9; oleophobic-coated. Supports advanced user-friendly operations such as tap-to-wake, triple-finger-downswipe to screencap.

HiBy OS updated to Android 9
HiBy OS is HiBy’s in-house developed rebuild of the Android system architecture, optimized for bit-perfect audio, unlike stock Android. Now updated to Android 9, supports the R6 in all desired audio I/O roles such as USB audio in / out, Bluetooth audio in / out simultaneously for unlimited flexibility.

Systemwide Direct Transport Audio Architecture
Bypasses Android's sample rate conversions at the system level for bit-perfect audio output.

MQA (Master Quality Authenticated) rendering to 16x
HiBy R6 includes MQA technology, which enables you to play back MQA audio files and streams, delivering the sound of the original master recording. MQA’ or ‘MQA Studio’ indicates that the product is decoding and playing an MQA stream or file, and denotes provenance to ensure that the sound is identical to that of the source material. ‘MQA Studio’ indicates it is playing an MQA Studio file, which has either been approved in the studio by the artist/producer or has been verified by the copyright owner.

HiByLink
Install the HiByMusic app on your Android or iOS smartphone and you can control the R6 from afar using WiFi or Bluetooth, for browsing, playing, skipping tracks, adjusting volume, etc.

MSEB Systemwide MSEB tuning
The MageSound Eight-Ball (MSEB) is HiBy's in-house researched sound tuning algorithm for adjusting desired audio qualities such as warmth, note thickness, vocal positioning, etc. directly instead of splitting the audio up into numbered frequencies. On the R6 it is available as a systemwide module for effecting all audio played on the device.*
*other than MQA, which MQA prohibits from modifying.

Hi-res Bluetooth codecs
Sporting Bluetooth 5.0, the HiBy R6 supports Bluetooth audio in both input and output directions, with advanced codecs such as UAT, LDAC, aptX, aptX HD, AAC, SBC, etc.

Effortless connectivity
Strong 2.4GHz and 5GHz signals for fast, stable connection online to get your favourite music.

Wireless control
Supports DLNA and AirPlay* remote playback and music file transfer via WiFi.
* Install a third-party Airplay receiver app that can receive Airplay from iDevices.

Playtime for all time
Up to 8.5 hours (balanced ) or 10 hours (SE) continuous play time. Up to 25 days standby time.

USB3.1 / Type-C
Faster data transfer, QC3.0 fast charging, supports coaxial digital output.
Look at me



Specifications
Model | New HiBy R6 |
---|---|
Operating system | Android 9.0 |
SoC | Snapdragon 660 |
CPU architecture | 8x Kryo 260 cores |
CPU speed | 2.2 GHz |
GPU | Adreno 512 |
DAC | ES9038Q2M x 2 |
WiFi | Supports 2.4GHz, 5GHz |
Bluetooth | Bluetooth 5.0 |
USB | USB 3.1 |
Display size | 4.97 inches |
Display colour | 16.8 million colours True Colour |
Display architecture | IPS |
Resolution | 1920*1080 |
Density | 443 PPI |
Touchscreen | Multitouch |
RAM | 4GB |
Internal storage | 64GB |
External storage | Up tp 2TB + via 1 micro SD card |
Colour choices | Silver / black |
Body material | Aluminium alloy |
Dimensions | 130*73*15 mm |
Weight | 235g |
Power source | 5V⎓0.5A / 9V⎓2A |
Battery size | 4500mAh |
Charging time | About 3 hours |
Firmware upgrades | OTA (over-the-air) online updates |
Font size | Adjustable |
APP third party applications | Unlimited installation |
Comparisons
Model | R6 | R6 Pro |
---|---|---|
DAC | ES9028Q2M x 2 | ES9028Q2M x 2 |
Operating system | Android 6.0/8.1 | Android 6.0/8.1 |
SoC | Snapdragon 425 | Snapdragon 425 |
Crystal oscillators | 22.579MHz, 24.576MHz | 45.158MHz, 49.152MHz |
Op amp | OPA1612 x 3 | MUSE8920 x 4 |
Headphone amp | TPA6120A2 x 2 | SSM6322 x 2 |
PMC & DSD support | PCM384kHz/32Bit, DSD256 | PCM384kHz/32Bit, DSD256 |
Output power (32Ω) | 3.5mm PO: 120mW
2.5mm BAL: 300mW | 3.5mm PO: 245mW
4.4mm BAL: 750mW |
Output mode | Voltage-mode output | Current-mode output |
Output ports | 3.5mm PO, 2.5mm BAL, 3.5mm LO/COAX (share) | 3.5mm PO, 4.4mm BAL, 3.5mm LO/COAX (share) |
USB | 2.0 | 2.0 |
Display | 4.2'' 768p | 4.2'' 768p |
Bluetooth | 4.2 | 4.2 |
Bluetooth codecs | Supports two-way Bluetooth
Bluetooth input: SBC, AAC, LDAC, UAT Bluetooth output: SBC, AAC, aptX, aptX HD, LDAC, UAT | Supports two-way Bluetooth
Bluetooth input: SBC, AAC, LDAC, UAT Bluetooth output: SBC, AAC, aptX, aptX HD, LDAC, UAT |
WiFi | Supports 2.4GHz, 5GHz | Supports 2.4GHz, 5GHz |
Antenna | Internal FPC | Internal FPC |
Storage | 3GB RAM+32GB ROM | 3GB RAM+32GB ROM |
Battery | 4000mAh | 4000mAh |
Playtime | 12 hours (SE) or 7 hours (BAL) | 12 hours (SE) or 8 hours (BAL) |
Dimensions | 116*66*15mm | 119.8*66.96*15.7mm |
Weight | Aluminum alloy: 198g
Stainless steel: 275g | Aluminum alloy: 198g
Stainless steel: 280g |
Quick charge | QC3.0 | QC3.0 |
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


Headfonics
"The HiBy FC4 has a very good power output to power usage ratio... If you plan on using full-sized headphones at times, the best choice would then be the FC4 due to its higher power output capability."
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Audiophile Heaven
"If you’re looking for a high quality DAC/AMP with good build quality, powerful output, a clean, clear and crisp sound, with good dynamics, HiBy FC4 should be a delightful experience."
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MOONSTAR
"What really surprised me was its sounds character and overall performance in this area, which is stands out with a mature, versatile and balanced tuning that shows pretty good synergy with almost any earphone that I have listen with this device."
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Headfonics
"The HiBy RS6 is a deeply engaging and well-thought-out initial foray into the world of portable R2R Android DAPs... The ground-up conceptualization of Darwin and what it means to the portable audio user is probably the most salient aspect of all its features with that blazingly fast OS workflow already a staple of previous HiBy product releases. "
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Twister 6
"When I started testing RS6, I didn’t appreciate at first the power of Darwin architecture until fw 1.20 update and addition of new IEM presets... I realized how effectively and naturally this DAP could be finetuned without a need of EQ or MSEB effects... Also, RS6 is one of the fastest DAPs I have tested to date."
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SoundNews
"Hiby’s RS6 borrows a lot of technology from said D/A converters, choosing a higher engagement factor, flow and natural textures above anything else. If there’s a DAP that tries to elevate your mood and cover your body with goose bumps, then Hiby’s RS6 is definitely that one."
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@gLer - Headphoneus Supremus
"A great DAP is the sum of all its parts – features, performance, stability, design, UX and sound quality. In my experience, few other DAPs comes close to the RS6’s combination of features, flexibility and sound quality, and no other DAP offers all of that plus R2R in one sweet and shiny copper package. Highly recommended."
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"The HiBy RS6 is a wonderfully designed, elegant player that provides many features in a complete package. You have streaming, advanced DSP settings, DTA, Hi-Res Bluetooth, micro SD support, a very fast CPU with a clean UI, 4.4mm BAL and 3.5mm SE outputs in a very rigid copper chassis. This is a dream DAP when it comes to online music streaming. I appreciate HiBy’s first effort on their new, in-house “Darwin” R2R Architecture. I’m sure they can build upon this and reach greater heights. "
See MorePortable USB DAC/headphone amp
Computer sound card, HiRes certified, low power consumption, all-metal body, Bauhaus design, hardware volume control, RGB indicator light

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.


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.


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.


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.


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.


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


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.


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


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
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) |
HiBy R5 series comparison
Table header 0 | R5 Gen 1 | R5 Saber |
---|---|---|
DAC | Dual CS43198 | Dual CS43198 |
Operating system | Android 8.1 | Android 8.1 |
SoC model | Snapdragon 425 | Snapdragon 425 |
Crystal oscillators | Dual crystal oscillators
45.158MHz, 49.152MHz | Dual crystal oscillators 45.158MHz, 49.152MHz |
OP-AMP | OPA1612 x 2 | OPA1642 x 2 |
Headphone AMP | AD8397 x 2 | AD8397 x 2 |
Decoding support (max) | PCM384kHz/32bit DSD256 | PCM384kHz/32bi DSD256 |
Output power @32Ω | PO:148mW
BAL:564mW | PO:148mW
BAL:564mW |
Signal to noise | PO:120.5dB
BAL:124dB | PO:120.5dB
BAL:124dB |
Residual noise | PO:2.1uV
BAL:2.64uV | PO:2.1uV
BAL:2.64uV |
Channel separation | PO:71dB
BAL:108.5dB | PO:71dB
BAL:108.5dB |
Frequency response | 20-80K | 20-80K |
Ports | 3.5mm SE/LO
4.4mm BAL/LO | 3.5mm SE/LO
4.4mm BAL/LO |
Battery capacity | 3500mAh | 3500mAh |
Play time | PO 18 hours
BAL 11 hours | PO 18 hours
BAL 11 hours |
Display | 4.0” (540*1080) | 4.0” (540*1080) |
Weight | 160g | 160g |
Dimensions | 107.7*61.2*15.6mm | 107.7*61.2*15.6mm |
Bluetooth | Bluetooth 4.2 | Bluetooth 4.2 |
Bluetooth audio codec | Two-way bluetooth
Bluetooth input: SBC, AAC, LDAC
Bluetooth output: SBC, AAC, APTX, APTX HD, LDAC, UAT | Two-way bluetooth Bluetooth input: SBC, AAC, LDAC
Bluetooth output: SBC, AAC, APTX, APTX HD, LDAC, UAT |
WiFi | Dual band 2.4GHz, 5GHz | Dual band 2.4GHz, 5GHz |
Storage | 2GB RAM+16GB ROM | 2GB RAM+16GB ROM |
USB | USB2.0 | USB2.0 |
Quick charge | QC3.0 | QC3.0 |