Hiby R4 Class A Android Digital Audio Player

A new generation music player with the ultimate price to performance ratio!

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Limited Time Offer

For a limited time, Hiby R4 orders will ship with a bonus lanyard from Hiby.

The HiBy R4 is an entry-level HiFi digital audio player with emphasis on ultimate price-to-performance ratio, while sporting a unique industrial design and a favourable balance of smooth operation, excellent sonics and a rich, intuitive user experience. Suitable for modern and popular music styles, it brings a well-based sonic experience that is enjoying for long-term listening.

Cyborg-inspired Industrial Design

R4’s unique design language hails to such elements as cyberpunk, mecha, and space opera. Clear-cut powerful geometric lines cross to form the sihouette of a living, breathing audio machine, with the offset hatch design on the back adding to the motif of a retro classic set in the distant future.

A sturdy lanyard lug coupled allows for personalisation as well as practical usability in ourdoor / active scenarios.

4-way ES9018C2M DAC array with PCM / DSD dual Customized Conversion Pathways

Sporting an unprecendent-for-the-sector set of four separate ES9018C2M DAC chips in a matched array, the R4 has indubitable fidelity in digital-analog conversion, yielding higher resolution and wider dynamic range from any source file, bringing smoother, purer sound.

The R4 supports native playback of DSD up to 256 and PCM up to 32bit/768kHz.\

For the first time in a DAP, PCM and DSD conversion pathways are seperated on the R4. The R4 features individually configured / designed DAC chips, LPF and power supplies for PCM and DSD conversion.

Flagship Grade Processing Power and Android 12 with SRC Bypass

Utilizing the Snapdragon 665 SoC with its 8-core CPU, the R4 runs multiple apps smoothly and speedily completes complex music library and audio processing tasks alike, bringing smooth operation and a high quality usage and listening experience to users.

R4's Android 12 OS ensures excellent compatibility and stability, all mainstream apps and music streaming apps run smoothly.

Android sample rate conversion bypass with Hiby's audio quality optimised OS architecture ensures bitperfect playback of your music.

Class A Amplification for Bountiful Drive Power

Utilizing widely acclaimed class-A amplification throughout, the amplifier is composed of four OPA1652, 2 OPA1612 and 16 triodes, and has zero crossover distortion for instant transient response; output scales up to 525mW at 32 Ohms, with distortion as low as 0.0005%. The R4 delivers a fine sense of power from music as well as exquisite detail.

High Resolution Display, Long Battery Runtime

The R4 features a large hi-res 4.7” Sharp LCD screen with 24 bits / 16.7 million colours. A 4500mAh battery yielding up to 11 hours run time on 3.5mm SE output, over 675 hours standby, as well as long run time under heavy screen / CPU / wireless use.

  • Cyborg-inspired industrial design
  • Quad-chip HiFi DAC array
  • PCM / DSD dual customized conversion pathways
  • Qualcomm Snapdragon 665 SoC
  • 3GB RAM+32GB ROM
  • Open Android 12 system
  • HiByOS systemwide bitperfect audio
  • Class A amplification
  • Femtosecond-grade audio clock crystal oscillators
  • 3.5mm SE + 4.4mm balanced output ports
  • 4.7” large hi-res display
  • 11 hour run time
  • DSD 256, PCM768kHz/32bit
  • MQA 16x unfolding
  • HiByCast wireless remote control
  • User-defined function toggle
  • Bidirectional Bluetooth audio (send and receive)
  • Hiby R4 Player
  • TPU Protective case x 1
  • Front Screen Protector x 2 (1 pre-applied, 2 total)
  • Warranty Card x 1
  • QC Card x 1
  • Type-C to Type C Charging and Data Cable x 1
  • User Guide x 1

Hardware Specification

Model HiBy R4
Operating System Android 12 with SRC Bypass
SoC Snapdragon 665
DAC ES9018C2M (4 units)
Amplifier Components OPA1652 (4 units)
Supported Audio Formats DSD 256, PCM768kHz/32bit, MQA 16x unfolding
Internal Storage 32GB
MicroSD Support (Max.)




WiFi Support 2.4GHz / 5GHz
Bluetooth Bluetooth 5.2
USB USB2.0 & USB3.2 Gen2, maximum transfer rate 10Gbps



Size 4.7″ Diagonal
Type IPS Display
Resolution 720×1280 Pixels



Charging Rate 20W
Charging Protocol PD 2.0
Charge Capacity 4500mAh/3.8V
Charge Time Approximately 2 hours (via 20W PD charger)


Audio Performance

Output 3.5PO (32 Ohm Load) 4.4PO (32 Ohm Load)
Max voltage swing 2.3 Vrms 4.1 Vrms
Max output power 165 mW 525 mW
Nominal output power 165 mW 525 mW
Minimum THD 0.0007% 0.0005%
Dynamic Range 120 dB 124 dB
Noise floor 2.3 uVrms 3.5 uVrms
SNR 120 dB 123 dB
Channel Separation 71 dB 111 dB
Frequency response 20 Hz - 90 kHz 20 Hz - 90 kHz



Chassis material Aluminium alloy
Outer Dimensions 129.6 x 68.3 x 18.5 mm
Weight 231 g


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