Cayin RU3 - Premium USB Audio Dongle

Display, USB-DAC
Ratings
BrandMore from Cayin
Delivered Tue, 7.4.
5 pieces in stock at third-party supplier
Supplied by
free shipping

Colour3

Product details

The RU3 - Premium USB Audio Dongle from Cayin is a compact and powerful solution for music lovers who want to bring Hi-Fi sound quality to portable devices. This DAC/headphone amplifier has been specifically designed as an entry-level model, combining modern decoding technologies with a balanced amplifier design. The elegant aluminum housing not only provides an appealing look but also ensures durability and robustness. The RU3 is equipped with the state-of-the-art ESS ES9069Q DAC chip, which enables clear and natural sound reproduction with excellent channel balance and minimal distortion. With its user-friendly controls and the ability to easily drive most earbuds and portable headphones, the RU3 is the ideal choice for mobile Hi-Fi listening.

  • High-performance ESS ES9069Q DAC for clear sound reproduction
  • Quad-balanced drive architecture for high dynamic range and low noise
  • Independent op-amp design for detailed playback
  • Compatible with iOS, Android, Windows, and Mac OS.

Key specifications

Headphone amplifier application area
HiFi, Portable
Power supply
USB power delivery

General information

Item number
65208753
Manufacturer
Cayin
Category
Headphone amplifiers
Release date
18.11.2025

Colour

Colour
Blue
Exact colour description
Hellcyan

Headphone amplifier properties

Headphone amplifier application area
HiFi, Portable
Headphone Amplifier Features
Display, USB-DAC

Audio properties

signal-to-noise ratio
117 dB
distortion factor
0%
Sample rate
768 kHz
Audio resolution
32 bits
Number of sound levels
29x

Connections

Audio inputs
USB-C
Audio outputs
4.4mm socket, Headphone jack 3.5mm (1x)

Power supply

Power supply
USB power delivery

Voluntary climate contribution

CO₂ emissions
29.26 kg
Climate contribution
CHF 0.70

Scope of delivery

Scope of delivery
RU3 dongle, Short manual, USB-C interconnect cable

Product dimensions

Length
60 mm
Width
25.40 mm
Height
11 mm
Weight
51 g

30-day right of return
24 Months Warranty (Bring-in)

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Headphone amplifiers» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • Cayin
    Not enough data
  • 1.Mackie
    1 %
  • 2.iFi Audio
    2.7 %
  • 3.FiiO
    3.1 %
  • Behringer
    Not enough data

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • Cayin
    Not enough data
  • 1.FiiO
    0 days
  • 2.iFi Audio
    5 days
  • Behringer
    Not enough data
  • Fosi Audio
    Not enough data

Return rate

How often is a product of this brand in the «Headphone amplifiers» category returned?

Source: Digitec Galaxus
  • Cayin
    Not enough data
  • 1.Behringer
    1 %
  • 2.FiiO
    5.3 %
  • 3.Fosi Audio
    5.8 %
  • 4.iFi Audio
    11.1 %
Source: Digitec Galaxus