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Cayin RU7 Portable Amplifier

Cayin RU7 Portable Amplifier

The RU7 is the second portable DAC/Amp dongle from Cayin. The reason why they got into the dongle market – according to Cayin – is because they were not satisfied with the highly integrated off-the-shelf solutions available out there.

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RU7 Features list

  • Pure 1-Bit resistor network Ladder DAC.
  • Parallel Driven Balanced Amplifier Chipset.
  • 3.5mm+4.4mm Dual Headphone Output.
  • Supports Balanced Line-Out.
  • 100-Level Resistor Array Volume Control.
  • Hi-Res PCM(32-Bit/384kHz), Native DSD256 Decoding.
  • All-to-DSD Function(64/128/256).
  • Detachable Type-C Connector Cable.
  • CNC-Machined Metallic Chassis.
  • Lightweight & Ergonomic Design.
  • High-Power Output(Up to 400mW, 4.4mm Bal).
  • Premium Leather Case.
  • 0.96” OLED Display Screen.
  • Impressive Performance With Clear Dynamic Range & High SNR Performance.
  • Compact & Handy.
  • Works with Apple iOS, Android, Windows, and Mac devices.
  • Minimum Interferences with Dual PCB. 


Fully Balanced Resistor Networks Discrete 1 -Bit DSD DAC


Type C: USB Audio Input

Digital Decoding

In: PCM 44.1kHz – 384kHz, DSD64/128/256, Native

All to DSD

DSD64/128/256 (user select)


Volume +/-, Mode


CNC Aluminum

Phone Out Line Out

3.5 mm Single-ended (Shared) 4.4 mm Balanced (Shared)


0.96 inch 128×64 OLED


USB C to C cable (Shielded), USB A to C adapter


Leather Case (Bundled)


66mm x 24mm x 12 mm

Net Weight


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