Cayin Audio RU3 Portable USB DAC / Headphone Amplifier

Description

Cayin Audio RU3 Portable USB DAC / Headphone Amplifier

Features

• ESS ES9069Q DAC with Hyper Stream IV architecture
• Dual OPA1602 and dual SGM8262 amplifier design
• SPV5068 RISC-V USB audio bridge processor
• Supports PCM 768kHz and native DSD512 playback
• Dual 3.5mm and 4.4mm PO/LO outputs
• 0.96-inch IPS color display with system info
• CNC aluminum body with HYP and STD modes

Audiophile-Grade DAC

RU3 is powered by a single ESS ES9069Q DAC in a dual-channel configuration, built around ESS’s latest HyperStream IV Dual DAC architecture and advanced SABRE HiFi technology. Each channel features its own independent op-amp stage, delivering pinpoint signal precision and outstanding channel separation.

A dedicated LDO power system and ultra–low phase noise crystal oscillator further refine performance, reducing distortion and crosstalk to vanishing levels. The result is a soundstage that opens up with greater width and depth, unveiling layers of crystal-clear detail and breathtaking musical realism.

Unleash Dynamic Performance

RU3 is built with two TI OPA1602 op-amps for high-precision I/V conversion and line driving, paired with two SGM8262 low-noise amplifiers to form a fully balanced quad-drive design.

In Hyper Mode, RU3 delivers greater output power and extended dynamic range while maintaining exceptional stability and tonal purity. Distortion and noise are effectively minimised, ensuring accurate imaging, a wider soundstage, and a deeply immersive listening experience.

HYP/STD Dual Power Modes

RU3 integrates a high-efficiency power management system with intelligent energy control, delivering high output while maintaining optimal efficiency. Users can switch between HYP/STD modes to adjust output levels for different listening environments. Its advanced regulation circuitry ensures stable, high-fidelity sound in both modes, completely free from USB power constraints.

Cayin Control App

RU3 integrates seamlessly with the Cayin Control App, providing intuitive access to essential audio settings. RU3 features a 10-band high-precision lossless EQ for in-depth sound customisation in the app.

3.5mm + 4.4mm Phone/Line Output

Despite its compact size, RU3 delivers outstanding output capability. Selectable high/low gain modes match various headphone impedances.

Broad Compatibility

RU3 offers seamless compatibility with Android, iOS, Windows, and macOS systems, allowing flexible switching between UAC 1.0 and UAC 2.0 modules.

Elegant and Portable

The DAC/amp features a unibody CNC-milled chassis made from aerospace-grade aluminium alloy. Its anodised surface finish forms a dense oxide layer that enhances both durability and metallic texture.