---
product_id: 551615420
title: "RU7 Portable USB DAC/Amp Dongle with 1-Bit Resistive Ladder DAC, DSD64/128/256 Support, OLED Screen, and Included Leather Case"
brand: "cayin"
price: "HK$4673"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/551615420-ru7-portable-usb-dac-amp-dongle-with-1-bit-resistive
store_origin: HK
region: Hong Kong
---

# High Power Output 1-Bit DAC OLED Screen RU7 Portable USB DAC/Amp Dongle with 1-Bit Resistive Ladder DAC, DSD64/128/256 Support, OLED Screen, and Included Leather Case

**Brand:** cayin
**Price:** HK$4673
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate Your Sound Game with the RU7!

## Quick Answers

- **What is this?** RU7 Portable USB DAC/Amp Dongle with 1-Bit Resistive Ladder DAC, DSD64/128/256 Support, OLED Screen, and Included Leather Case by cayin
- **How much does it cost?** HK$4673 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/551615420-ru7-portable-usb-dac-amp-dongle-with-1-bit-resistive)

## Best For

- cayin enthusiasts

## Why This Product

- Trusted cayin brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek & Stylish:** With an ergonomic design and high-resolution OLED screen, the RU7 is as much a fashion statement as it is a tech marvel.
- • **Luxury on the Go:** Protect your investment with a custom magnetic leather case that combines style and functionality.
- • **Power Meets Precision:** Dual amplifiers deliver a balanced output across four channels, elevating your audio experience to new heights.
- • **Unleash Audio Excellence:** Experience the magic of a custom-built 1-bit DAC that transforms your digital tunes into analog masterpieces.
- • **Control at Your Fingertips:** Enjoy 100 precise volume steps with our discrete resistor network, tailored for the discerning audiophile.

## Overview

The CAYINRU7 Portable USB DAC/Amp Dongle is engineered for audiophiles, featuring a 1-bit resistive ladder DAC, high power balanced output across four channels, discrete volume control with 100 steps, a high-resolution OLED screen, and a custom magnetic leather case for protection and style.

## Description

CAYIN RU7 Portable USB DAC/Amp Dongle with 1-Bit Resistive Ladder DAC, DSD64/128/256 Support, OLED Screen, and Included Leather Case

## Features

- 1-BIT RESISTIVE LADDER DAC – Discover unparalleled audio excellence with the RU7 by Shanling. Its custom-built micro-miniaturized 1-bit DAC circuit effortlessly converts digital signals to immersive analog sound. Meticulously designed with discrete components and a 4-channel architecture, it rivals the renowned discrete DAC of Shanling's N7 DAP. With 128 high precision thin film resistors and a 3-level active LPF, the RU7 delivers pristine audio quality and convenient volume adjustment.
- HIGH POWER BALANCED OUTPUT ACROSS 4 CHANNELS – Experience a notable upgrade with the system's dual amplifiers operating in parallel, delivering a high-power balanced output across four channels. The second amplifier acts as a parallel unity gain inverting phase amplifier, greatly amplifying your phone's output power for an impressive performance boost.
- DISCRETE VOLUME CONTROL – The RU7's discrete resistor network volume control provides 100 precise steps, meeting high standards for precision, noise, and power consumption. It satisfies the needs of discerning IEM users with 3 resistor segments and switching relays.
- AN ALL ROUNDER – The RU7 boasts a high-resolution OLED screen (128x64 pixels) for clear playback information. Its hardware volume button doubles as a menu selection button, adding convenience. With chamfering for an ergonomic grip and smooth curved surfaces, it combines aesthetics and comfort.
- LEATHER CASE INCLUDED – Enjoy the luxury of a custom-made magnetic leather case for the RU7. With a precise cutout and meticulous craftsmanship, it offers a snug fit and stylish design. It comes with two metal plates and adhesive tape pads for added convenience.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Control Method | Touch |
| Controller Type | wired |
| Control Type | Volume Control |
| Carrying Case Weight | 50 Grams |
| Unit Count | 1.0 Count |
| Carrying Case Material | Leather |
| Antenna Location | Music |
| Compatible Devices | iPhone |
| Cable Features | Retractable |
| Additional Features | Volume Control, Lightweight, Leather Case Included |
| Enclosure Material | Leather |
| Specific Uses For Product | Music |
| Headphone Folding Features | In Ear, Over Ear |
| Headphones Ear Placement | In Ear |
| Carrying Case Color | Black |
| Style Name | In Ear, Over Ear |
| Theme | Audio Technology |
| Color | Black |
| Connectivity Technology | Wired |
| Headphone Jack | 3.5mm Single-ended, 4.4mm Balanced |
| Frequency Range | 20 Hz - 20,000 Hz |
| Audio Driver Type | Dynamic Driver |
| Impedance | 0.5 Ohm |
| Noise Control | None |

## Product Details

- **Brand:** CAYIN
- **Colour:** Black
- **Ear placement:** In Ear
- **Form factor:** In Ear, Over Ear
- **Impedance:** 0.5 Ohms

## Images

![RU7 Portable USB DAC/Amp Dongle with 1-Bit Resistive Ladder DAC, DSD64/128/256 Support, OLED Screen, and Included Leather Case - Image 1](https://m.media-amazon.com/images/I/61z0kHq4o5L.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.hk/products/551615420-ru7-portable-usb-dac-amp-dongle-with-1-bit-resistive](https://www.desertcart.hk/products/551615420-ru7-portable-usb-dac-amp-dongle-with-1-bit-resistive)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-10*