The Cayin RU7 USB DAC Headphone Amplifier, a cutting-edge audio device that revolutionizes your listening experience. With its purposively designed micro-miniaturized 1-Bit DAC circuit made from discrete components, this DAC ensures unparalleled audio fidelity and accuracy. By converting digital signals to analog through a fully differentiated 4-ch DAC architecture, the RU7 delivers an incredibly detailed and immersive soundstage.

At the heart of the RU7 lies a remarkable 1-Bit DAC circuit, meticulously crafted using a resistor network composed of 128 high-precision Thin Film Resistors. This configuration, comprising 4 sets of 32 resistors, closely resembles the discrete DAC found in the renowned N7 DAP, ensuring exceptional audio performance. Immerse yourself in the richness and depth of your music as the RU7 faithfully reproduces the intricacies of each note, taking your listening experience to new heights.

To further enhance the audio quality, the output of the resistor network undergoes a sophisticated 3-level active LPF (Low-Pass Filter), refining the signal and eliminating any unwanted noise or distortion. The result is a pristine and clean audio signal, free from artifacts or interference. The RU7 then converts this optimized signal to a single-ended output, allowing for seamless volume adjustment and customization according to your preferences.

The Cayin RU7 USB DAC Headphone Amplifier is not just a technical marvel; it's a true audiophile's dream. Its sleek and elegant design, coupled with its exceptional sound performance, makes it a must-have for anyone seeking the ultimate audio experience. Immerse yourself in a world of pure sonic bliss with the RU7, and rediscover your favorite music like never before.

Fully Balanced Resistor Networks - Discrete 1-Bit DAC for DSD Format

Purposively designed micro-miniaturized 1-Bit DAC circuit from discrete components

Convert digital signal to analogue signal through a fully differentiated 4-ch DAC architecture

The 1-Bit DAC circuit is a resistor network composed of 128 pcs (4 x 32) high-precision Thin Film Resistors, this closely resembles to the discrete DAC of N7 DAP

The output of the resistor network will go through a 3-level active LPF and then be converted to a single-ended signal for volume adjustment.

High Power Parallel Phone Amplifier

Dual amplifiers in parallel, providing 4-CH high power Balanced Driven output

The second phone amplifier is a parallel unity gain inverting phase amplifier

An impressive upgrade in phone output power:

3.5mm SE, 160mW @32Ω
4.4mm BAL, 400mW @32Ω

Shared Line Out Conveniently Connected

The shared line out function will configure the 3.5mm or 4.4mm phone output into fixed voltage output (bypassing volume control): 3.5mm Single-ended, 1.2Vrms 4.4mm Balanced, 2.4Vrms

The line out voltage is carefully selected to retain as much detail and dynamic of the 1-Bit DAC with minimum noise and distortion.

Enable you to connect the RU7 to a portable/desktop amplifier or home audio system and used it as a miniature 1-Bit DAC

Discrete Volume Control

Discrete Resistor Network DAC circuit is very demanding on incoming data integrity, Cayin recommends users to keep the digital volume of their mobile phone at full output to safeguard the quality of the audio digital signal.

When off-the-shelf analogue volume options could not meet the high-precision, low noise, low power consumption requirement of RU7, Cayin developed their own discrete resistor network volume control

100 steps volume control through 3 segments of resistors and switching relays, offer precise control over a wide volume range, satisfy even the need of most sensitive IEM users

Outstanding Digital Audio Capability with User Selectable All-to-DSD

RU7 supports PCM up to 384kHz and native DSD from DSD64 to DSD256

Its Audio Bridge will receive different audio formats and go through high-precision signal enhancement

All digital audio signals will convert to the designated DSD format (DSD64/DSD128/DSD256) before feeding to the discrete 1-BIT DAC circuit.

Dual PCB to Minimise Interference

To minimize interference, RU7 circuitry is split into TWO 6-layerrs PCB, with digital and analogue circuit installed in separate boards.

Safeguard signal integrity makes sure the noise from the reference clock and DSP will not bleed into the amplification circuit.

Low Power Consumption, Compatible with Common Platforms

The discrete resistor network is a low-power DAC circuit when compared to other highly integrated DAC chipsets, with minimised power drain from a mobile source.

Redesigned amplification circuit increase output power dramatically while maintaining the overall power drain at 100-110 mA

Low power consumption allows RU7 compatibles with the following digital audio sources:

  • Android-based mobile devices
  • iOS and iPad OS mobile devices
  • macOS computers
  • Window 7/8/8.1/10 computers
  • Digital Audio Players with USB Audio output

Cayin RU7 USB DAC Headphone Amplifier

£249.99
£249.99
accessories: Standard

The Cayin RU7 USB DAC Headphone Amplifier, a cutting-edge audio device that revolutionizes your listening experience. With its purposively designed micro-miniaturized 1-Bit DAC circuit made from discrete components, this DAC ensures unparalleled audio fidelity and accuracy. By converting digital signals to analog through a fully differentiated 4-ch DAC architecture, the RU7 delivers an incredibly detailed and immersive soundstage.

At the heart of the RU7 lies a remarkable 1-Bit DAC circuit, meticulously crafted using a resistor network composed of 128 high-precision Thin Film Resistors. This configuration, comprising 4 sets of 32 resistors, closely resembles the discrete DAC found in the renowned N7 DAP, ensuring exceptional audio performance. Immerse yourself in the richness and depth of your music as the RU7 faithfully reproduces the intricacies of each note, taking your listening experience to new heights.

To further enhance the audio quality, the output of the resistor network undergoes a sophisticated 3-level active LPF (Low-Pass Filter), refining the signal and eliminating any unwanted noise or distortion. The result is a pristine and clean audio signal, free from artifacts or interference. The RU7 then converts this optimized signal to a single-ended output, allowing for seamless volume adjustment and customization according to your preferences.

The Cayin RU7 USB DAC Headphone Amplifier is not just a technical marvel; it's a true audiophile's dream. Its sleek and elegant design, coupled with its exceptional sound performance, makes it a must-have for anyone seeking the ultimate audio experience. Immerse yourself in a world of pure sonic bliss with the RU7, and rediscover your favorite music like never before.

Fully Balanced Resistor Networks - Discrete 1-Bit DAC for DSD Format

Purposively designed micro-miniaturized 1-Bit DAC circuit from discrete components

Convert digital signal to analogue signal through a fully differentiated 4-ch DAC architecture

The 1-Bit DAC circuit is a resistor network composed of 128 pcs (4 x 32) high-precision Thin Film Resistors, this closely resembles to the discrete DAC of N7 DAP

The output of the resistor network will go through a 3-level active LPF and then be converted to a single-ended signal for volume adjustment.

High Power Parallel Phone Amplifier

Dual amplifiers in parallel, providing 4-CH high power Balanced Driven output

The second phone amplifier is a parallel unity gain inverting phase amplifier

An impressive upgrade in phone output power:

3.5mm SE, 160mW @32Ω
4.4mm BAL, 400mW @32Ω

Shared Line Out Conveniently Connected

The shared line out function will configure the 3.5mm or 4.4mm phone output into fixed voltage output (bypassing volume control): 3.5mm Single-ended, 1.2Vrms 4.4mm Balanced, 2.4Vrms

The line out voltage is carefully selected to retain as much detail and dynamic of the 1-Bit DAC with minimum noise and distortion.

Enable you to connect the RU7 to a portable/desktop amplifier or home audio system and used it as a miniature 1-Bit DAC

Discrete Volume Control

Discrete Resistor Network DAC circuit is very demanding on incoming data integrity, Cayin recommends users to keep the digital volume of their mobile phone at full output to safeguard the quality of the audio digital signal.

When off-the-shelf analogue volume options could not meet the high-precision, low noise, low power consumption requirement of RU7, Cayin developed their own discrete resistor network volume control

100 steps volume control through 3 segments of resistors and switching relays, offer precise control over a wide volume range, satisfy even the need of most sensitive IEM users

Outstanding Digital Audio Capability with User Selectable All-to-DSD

RU7 supports PCM up to 384kHz and native DSD from DSD64 to DSD256

Its Audio Bridge will receive different audio formats and go through high-precision signal enhancement

All digital audio signals will convert to the designated DSD format (DSD64/DSD128/DSD256) before feeding to the discrete 1-BIT DAC circuit.

Dual PCB to Minimise Interference

To minimize interference, RU7 circuitry is split into TWO 6-layerrs PCB, with digital and analogue circuit installed in separate boards.

Safeguard signal integrity makes sure the noise from the reference clock and DSP will not bleed into the amplification circuit.

Low Power Consumption, Compatible with Common Platforms

The discrete resistor network is a low-power DAC circuit when compared to other highly integrated DAC chipsets, with minimised power drain from a mobile source.

Redesigned amplification circuit increase output power dramatically while maintaining the overall power drain at 100-110 mA

Low power consumption allows RU7 compatibles with the following digital audio sources:

  • Android-based mobile devices
  • iOS and iPad OS mobile devices
  • macOS computers
  • Window 7/8/8.1/10 computers
  • Digital Audio Players with USB Audio output
DAC Discrete 1-Bit Resistor Ladder DAC
DAC Architecture Fully Balanced differentiate 4-Channel DAC Architecture
Resistor Specification 128 PCS 0.1% 25ppm high precision thin Resistor
Signal Process All To DSD
Phone Amplifier Parallel Driven
DAC Sampling User Selectable DSD64/128/256
PCB Design Dual 6-layer PCB with Digital and Analog Circuit Installed on separate Boards.
Gain Low Gain/High Gain
LO 3.5mm LO/4.4mm LO
PO 3.5mm PO/4.4mm PO
USB IN Format Supported Support up to PCM384,DSD256
Display OLED
Hardware and Digital Volume Discrete Volume Control through 3 segments of resistors and switching Relay
PO Power Output 3.5mm Single Ended 160mW@32Ω
4.4 mm Balanced 400mW@32Ω
THD 3.5mm Single Ended/4.4 mm Balanced 0.006%
S/N Ration 3.5mm Single Ended 114dB
4.4 mm Balanced 112dB
Dynamic Range 3.5mm Single Ended/4.4 mm Balanced 115dB
Output Impedance 3.5mm Single Ended 0.5Ω
4.4 mm Balanced 1.0Ω
System Supported Android Mobile and Tablet, iOS, iPadOS
DAP
macOS and Windows PC
Weight/Size 25g / 66*24*12mm
Cable Type C Cable Standard in the Package. Lightning Cable Optional
Leather Case Standard in the Package
  • RU7 USB DAC Headphone Amplifier
  • Type-C cable
  • USB A to C adapter
  • RU7 Green Leather case
  • Magnetic addons pads
  • User Manual

Item Ships from our UK Warehouse - Typical delivery is 3 - 5 business days for mainland UK.

OTIC can be contacted for updates.

UK ORDERS - Free shipping on all baskets over £250.

We offer a refund on any unused items, subject to our returns policy.

Click here to view all delivery & returns info - including shipping, tax and duty information for International Customers.

Products purchased from OTIC Audio are supplied with a manufacturer warranty that is specified on the product page on our website. Most products come with a 1Y manufacturer warranty (or 3 months for B-grade, open box, refurbished, ex-demo, and second-hand items).

The manufacturer's warranties are limited to physical defects in the materials, parts, and workmanship used in making the product. Abnormal conditions, deliberate abuse, and damage due to accidents, operator's error, or unauthorized service attempts are excluded from any warranty claims.

Faulty goods returned under the manufacturer's warranty are to be returned to OTIC Audio at the cost of the customer. OTIC Audio will cover the cost of shipping the repaired or replacement product back to the customer.

Cayin RU7 USB DAC Headphone Amplifier

Cayin RU7 USB DAC Headphone Amplifier

£249.99

Cayin RU7 USB DAC Headphone Amplifier

£249.99
accessories: Standard

Recently Viewed Products