Evolution — Tube Sound Reimagined

For more than three decades, vacuum-tube audio has been one of the defining strengths of Cayin. With the new ID6, we bring that experience into a modern all-in-one desktop platform that combines network
streaming, high-resolution digital playback, DAC functionality, preamplifier and line outputs, and a powerful headphone amplifier in one compact chassis.
The ID6 is designed for listeners who want the flexibility of a modern streaming system without giving up the unmistakable musical character of tube amplification. Its three instantly switchable timbres, advanced Android platform, dual-mono ESS decoding, fully discrete balanced headphone stage, and broad digital connectivity make it a highly versatile centerpiece for both headphone and two-channel systems.

Moderndigital architecture

A customized Android 14 platform, Rockchip RK3576 processor, bit-perfect USB Audio and I²S paths, dual ES9082Q DACs operating in MONO mode, and XMOS XU316 USB processing form the core of the ID6 digital section, with support up to PCM 32-bit/768kHz and Native DSD512.

Switchable-timbre design that blends tube and solid-state circuitry on one platform

The Cayin ID6 centers on a switchable-timbre design that blends tube and solid-state circuitry on one platform. Users can select Classic Tube for warmth and vocal intimacy, Modern Tube for a wider soundstage with tighter bass, or Solid-State for maximum precision and detail. This flexibility comes from a 12AU7 dual-triode tube architecture cascaded with MOS-FETs, complete with a viewing window that shows off the glowing filaments as a nod to Cayin’s tube heritage. On the digital side, the device runs a customized Android 14 platform on Rockchip’s octa-core RK3576 chip, enabling smooth streaming, fast library scans, and multitasking alongside high-resolution local playback.

Custom-Designed Transformers

Under the hood, the ID6 is built for bit-perfect, high-fidelity signal paths. It supports PCM up to 32-bit/768kHz and native DSD512 through optimized USB Audio and I²S transmission, backed by dual ES9082Q DACs run in MONO mode — one per channel — for better separation, SNR, and dynamic range. Amplification comes from a fully discrete, four-channel balanced topology using Nexperia audio-grade transistors, with selectable Class A/AB operation and a DC-Servo circuit, delivering up to 4.0W + 4.0W into 16Ω. USB audio is handled by a 16-core XMOS XU316 chip supporting UAC1.0/2.0 across major operating systems, while a toroidal-transformer-based linear power supply keeps digital and analog sections electrically separate to reduce noise.

Beyond the core audio engine, the ID6 is designed as a full system hub

Beyond the core audio engine, the ID6 is designed as a full system hub. It offers extensive storage and networking options — dual-band Wi-Fi, Ethernet, Qualcomm QCC5125 Bluetooth, USB drives, card readers, and an internal M.2 NVMe 2280 SSD bay — plus a 6-inch FHD+ touchscreen with spectrum visualization, a VU-meter display, and a track-format indicator ring around the volume knob. It connects via balanced XLR, RCA, HDMI I²S/ARC, coaxial and optical I/O, and USB, and integrates with the CayinControl app for timbre switching and device management, with more app features planned through future firmware updates.

Headphone Amplifier and Preamplifier in One

Connectivity and System Integration
The ID6 is built to serve as the central hub of a desktop or full-size audio system. In addition to headphone playback, it can operate as a DAC, line-level source, or volume-controlled preamplifier and provides extensive digital input and output options.

• Balanced XLR line / preamp output and single-ended RCA line / preamp output
• HDMI I²S-LVDS digital output
• Coaxial and optical digital inputs and outputs
• USB DACinput
• HDMI ARC multimedia input
• USB 3.0 OTG / external storage / PC transfer
• Dual USB HOST ports for storage / USB Audio output
• Wired Ethernet plus separate Wi-Fi and Bluetooth antenna terminals.