Cayin RU3

Ultra-Compact Audiophile DAC with HyperStream IV Precision

Unlock true high-resolution audio wherever you listen. The Cayin RU3 combines advanced ESS SABRE DAC technology with a fully balanced amplification stage to deliver remarkable clarity, dynamic power, and immersive detail from a device small enough to travel anywhere. Whether paired with headphones, a laptop, or a smartphone, RU3 transforms everyday listening into a refined audiophile experience.

Designed with precision circuitry, intelligent power control, and premium components, RU3 reveals the subtle textures, depth, and emotion hidden in your music—bringing studio-quality sound to your pocket.

Audiophile-Grade ESS SABRE Conversion

At the heart of RU3 lies the ESS ES9069Q DAC, built on the latest HyperStream IV Dual DAC architecture. Configured in dual-channel mode, it ensures superior channel separation, lower distortion, and precise signal processing for exceptional sonic accuracy.

Each channel is equipped with an independent op-amp stage, while a dedicated LDO power supply system and ultra-low phase noise crystal oscillator minimize interference and crosstalk. The result is an expansive soundstage with enhanced depth, detail, and natural musical realism.

Fully Balanced Quad-Drive Amplification

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

This sophisticated amplification stage ensures cleaner signal delivery, improved dynamic response, and outstanding tonal balance—allowing your headphones to perform at their full potential.

Dual-Core Audio Processing

Powered by the SPV5068 processor, RU3 features a RISC-V dual-core audio architecture designed for ultra-low latency, high efficiency, and minimal distortion.

Supporting 32-bit / 768kHz PCM and native DSD512, RU3 handles the most demanding high-resolution audio formats with ease, preserving every detail of the original recording.

Precision Sound Customisation

Through the Cayin Control App, RU3 provides convenient access to audio settings and a 10-band high-precision lossless EQ. Fine-tune your listening experience by adjusting frequency ranges to suit different genres, headphones, or personal preferences.

Compact Power with Premium Design

Despite its pocket-friendly size, RU3 delivers impressive output through 3.5mm single-ended and 4.4mm balanced headphone/line outputs, along with selectable high and low gain modes for optimal headphone matching.

The device is housed in a CNC-milled unibody chassis crafted from aerospace-grade aluminum alloy, finished with a durable anodized coating that enhances both strength and refined metallic texture.

Seamless Cross-Platform Compatibility

RU3 works effortlessly across multiple platforms, including Android, iOS, Windows, and macOS. It supports both UAC 1.0 and UAC 2.0 modes, ensuring flexible connectivity with smartphones, tablets, laptops, and desktop systems.