【New, Guaranteed】QDC Portable USB DAC QDC-QD1-DAC

Brand New, Unopened!
Purchased August 2025! (Proof of purchase included!)
Amazon Price: ¥18,564

[Product Name] Portable USB DAC QDC-QD1-DAC
[Manufacturer] QDC
[Model Number] QDC-QD1-DAC

Important Notes
・Price is firm.
・For any initial defects, please contact the manufacturer for warranty service. (No returns!)
・For environmental reasons, we will ship with minimal packaging.
・The package may have scuffs or dirt from the time of purchase.
・To prevent issues, please refrain from purchasing if you are seeking perfection or are overly sensitive.

Product Features
USB Audio Bridge CT7601PR and CS43198 Dual DAC Configuration
The QD1 is qdc's first Hi-Fi portable USB DAC developed to easily bring out the performance of IEMs and headphones from smartphones, PCs, and more.
The hardware is composed of the audio bridge controller CT7601PR, which supports high-spec audio formats, and the high-performance, reliable Ciruss Logic DAC chip CS43198 in a dual DAC configuration.
The PCBA is custom-built to strict sound quality performance requirements, achieving a dynamic range of up to 130dB, high output, and low distortion, enabling playback of PCM 768KHz/32bit and DSD 256 (DoP).

Supports 3.5mm Unbalanced and 4.4mm Balanced Outputs
Supports both 3.5mm unbalanced and 4.4mm balanced outputs.
In high gain mode, the unbalanced output provides 2Vrms (no load) and the balanced output provides 4Vrms (no load), allowing you to drive IEMs and headphones with ample power.

2-Stage Gain Switching Function
The QD1 is equipped with a 2-stage gain adjustment function: low gain and high gain.
By switching the gain according to the efficiency of the connected IEMs or headphones, you can achieve more optimal volume adjustment.
To switch between high gain and low gain while the QD1 is operating, press and hold the + and - buttons simultaneously for over 1 second.
The indicator lamp will be white for high gain and red for low gain.