Cayin RU7 1-Bit DAC Dongle with Leather Case

Compact balanced DAC for serious mobile listening

The Cayin RU7 is designed for listeners who want reliable, desktop-grade audio performance from phones, tablets, and laptops. This compact dongle DAC/amp uses a full balanced resistor network with a discrete 1‑bit DAC architecture to deliver clear, controlled sound from a pocket-sized device, protected by a dedicated leather case for daily carry.

The RU7 connects via USB Type‑C to most modern Android devices, computers, and compatible tablets (with appropriate adapters where required). Inside, a four‑layer gold‑plated PCB is used to support stable signal transmission and reduce interference, while the balanced design helps minimise noise between channels. The discrete 1‑bit DAC focuses on precise digital‑to‑analog conversion, supporting high‑resolution PCM up to 384 kHz and DSD128, so it can handle a wide range of lossless and hi‑res files from your preferred streaming services or local library.

The enclosure is made from robust metal for durability, yet remains easy to pocket or pair with your phone using the included custom leather case. Power management is handled through an independent power supply section and dedicated filtering, designed to reduce power noise from the host device and support a cleaner audio output. This makes the RU7 suitable for use in varied environments, from commuting to office or home listening, without the bulk of a traditional desktop setup.

Why It's a Smart Choice

• Balanced discrete 1‑bit DAC design focused on accurate, low‑noise conversion.
• High‑resolution support up to 384 kHz PCM and DSD128 for modern lossless audio.
• Custom leather case and compact metal body for protection and everyday portability.

FAQ

Q: Which devices can I use with the Cayin RU7?
A: The RU7 uses a USB Type‑C connector and works with most Android phones, tablets, and computers that support USB audio. iOS devices and some tablets may require an additional adapter from Lightning or USB‑A to USB‑C.

Q: Do I need special software or drivers?
A: Most modern mobile devices and operating systems recognise the RU7 as a standard USB audio device with no extra software. Some Windows systems may benefit from manufacturer drivers for advanced formats and settings.

Q: Can it drive over‑ear headphones?
A: The RU7 is designed to drive a wide range of in‑ear monitors and many portable over‑ear headphones. For very high‑impedance or difficult‑to‑drive models, performance will depend on the specific headphone's requirements.

Q: What audio formats does it support?
A: The RU7 supports PCM sample rates up to 384 kHz and DSD up to DSD128 when used with compatible playback software and source material.