Hiby RS8 II
HIBY
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Description / Hiby RS8 II
HiBy RS8 II — Redefining the Flagship Portable Hi-Fi Experience
The HiBy RS8 II is the latest evolution in portable audio excellence, merging HiBy’s decade-long innovation in high-end digital music playback with cutting-edge computational power and precision audio design. Engineered as an ultra-flagship Digital Audio Player, it blends artful design, acoustic mastery, and computational intelligence into a single device.
Revolutionary DARWIN III DAC System
The DARWIN III architecture marks a complete redesign of HiBy’s proprietary R2R-based conversion engine. Built around a powerful FPGA core with 100K logic units, it integrates adaptive filtering, R2R modeling, and harmonic control to recreate analog musicality with digital precision. Achieving 0.0008% THD+N, it stands as a benchmark in distortion-free, natural sound.
Intelligent Adaptive Amplification
A new 64-step adaptive amplifier automatically optimizes power delivery in real time. Whether driving sensitive IEMs or demanding full-size headphones, the RS8 II maintains Class A purity while balancing efficiency and dynamics — ensuring a lifelike, textured presentation across all listening volumes.
High-Voltage Dual-Cell Battery
Powered by an innovative 46.8Wh dual-cell battery system, the RS8 II operates at higher voltages for increased headroom and drive capability. Supporting 80W PD3.0 fast charging, it achieves full recharge in under two hours while offering up to 20 hours of playback on Class AB mode.
Qualcomm QCS8550 Processor — 8 Gen 2 Power
Running on the latest Qualcomm Dragonwing QCS8550, the RS8 II delivers top-tier smartphone-grade speed with a 1+4+3 core architecture. With integrated CPU, GPU, NPU, FPGA, and DSP, it enables seamless multitasking, high-speed processing, and AI-driven sound optimization.
Dedicated Femtosecond Grade Audio Oscillators
Low jitter and phase noise through dedicated femtosecond grade audio oscillators ensure correct reproduction of digital signals. This insures accurate placement of instruments and full reprouction of playing technique even in complex live orchestral passages.
Sankofa AI Tonality Simulation
Harnessing AI and deep learning, HiBy’s Sankofa engine captures and replicates the timbral qualities of classic playback gear (such as LP, MD, CD, cassette decks, reel-to-reel tape decks, etc). This technology allows real-time tonality transformation, blending nostalgia with innovation.
HiByOS Android 13
A fully open Android 13 system built upon HiBy’s proprietary bit-perfect playback architecture ensures uncompromised sound quality. HiByOS bypasses Android’s stock resampling, offering bit-perfect audio output even for third-party audio applications.
Elegant, Durable Design
Crafted from aerospace-grade aluminum, every curve and surface of the RS8 II exudes luxury and precision. The crown-shaped volume knob, hexagonal buttons, and monoblock chassis reflect HiBy’s dedication to tactile satisfaction and timeless industrial beauty.
Connectivity and Versatility
With bidirectional Bluetooth 5.3, Wi-Fi 7 MIMO, and USB 3.2 Gen 2 connectivity, the RS8 II integrates seamlessly with both wired and wireless ecosystems. It supports dual 4.4mm balanced and 3.5mm outputs, I²S (HDMI Type-C), and future-ready digital interconnects.
Product Inclusions
- RS8 II
- Leather Case
- Type C to Type C Charging Cable (USB 3.0)
- Tempered Glass Protector
- Dust Plug
- User manual/Warranty Card/QC Certificate
Specifications
| Model | HiBy RS8 II |
| Operating System | Android 13 |
| CPU | Qualcomm Dragonwing QCS8550 (Snapdragon 8 Gen 2 platform) |
| DAC | DARWIN III |
| Audio Format Support | PCM 1536 kHz/32-bit, DSD1024, MQA16X |
| Analog Audio Ports | 3.5mm PO/LO (shared), 4.4mm balanced, 4.4mm balanced line out |
| Digital Audio Ports | I²S, USB-C (S/PDIF, USB Audio In/Out) |
| Supported Audio Codecs | MP3, WAV, APE, FLAC, DSF, DFF, ISO, CUE, WMA, OGG, AAC, OPUS, AIFF |
| Wi-Fi | Wi-Fi 7 (MIMO, 802.11be) |
| Bluetooth | Bluetooth 5.3 (bidirectional) |
| Bluetooth Codec Support | Output: aptX Adaptive, aptX Lossless, aptX HD, LDAC, AAC, SBCInput: LDAC, AAC, SBC |
| Display | 5.5" Full HD touchscreen |
| Resolution | 1080 × 1920 pixels |
| RAM | 16GB (LPDDR5-4200MHz) |
| Internal Storage | 512 GB |
| Expandable Storage | Up to 2 TB microSD (supports hot plugging) |
| USB Port | USB-C supporting USB 2.0, 3.0, 3.2 Gen 2 (10 Gbps max bandwidth) |
| Body Material | Aerospace-grade aluminum chassis, glass backplate |
| Dimensions | 75.7 × 148.5 × 24.1mm |
| Weight | 411 g |
| Battery Capacity | 46.8 Wh (7.8V / 6000mAh) high-voltage battery |
| Charging Protocol | PD 3.0 (80 W) |
| Charging Time | < 2 hours (0% → 100%) |
| Playback Time |
Class AB: approx. 20.7 h (3.5 mm PO) / 19.0 h (4.4 mm balanced) Class A: approx. 15.0 h (3.5 mmPO) / 10.9 h (4.4 mm balanced) Adaptive Amp: 17.0 h (3.5 mm PO) / 15.0 h (4.4 mmbalanced) (Turbo mode off, screen off, playing 44.1kHz WAV files, all other settings at factory default) |
Audio Specifications
| 3.5 LO (Line Out) | 4.4 LO (Line Out) | 3.5 PO (Headphone Out) | 4.4 PO (Headphone Out) | |
|---|---|---|---|---|
| Voltage Swing | 2 Vrms | 4 Vrms | 2.73 Vrms @ 32Ω | 5.08 Vrms @ 32Ω |
| Output Power | — | — | 210 mW @ 32Ω | 812 mW @ 32Ω |
| Minimum THD | 0.0008% | 0.0008% | 0.003% | 0.001% |
| Noise Floor | 1.7 µV | 3 µV | 4.8 µV | 7.5 µV |
| SNR (Signal-to-Noise Ratio) | 121.6 dB | 122.1 dB | 114.8 dB | 116.4 dB |
| Dynamic Range | 116.2 dB | 115.2 dB | 113.5 dB | 114.5 dB |
| Channel Separation | 94.2 dB | 107 dB | 75 dB | 100 dB |
| Frequency Response | 20 Hz – 50 kHz | 20 Hz – 50 kHz | 20 Hz – 50 kHz | 20 Hz – 50 kHz |