The D-03X can reveal new subtleties in even the most familiar music. MQA (Master Quality Authenticated) is an award-winning British technology that delivers the sound of the original master recording. The player includes MQA technology, which enables you to play back MQA-CDs as well as MQA audio files up to 24-bit transferred via USB, optical and coaxial inputs.

The USB input also supports PCM data up to 384 kHz/32-bit and DSD data up to 11.2 MHz while the optical and coaxial inputs accept PCM signals up to 192 kHz/24-bit. In addition to conventional “isochronous” file transfers at fixed bitrates, the USB input supports four modes of Bulk Pet* high-resolution audio file transfer. Bulk Pet, optimizes data packaging and delivery to the DAC easing the processing load for both the host CPU and the device CPU enhancing playback stability and ultimately yielding improved sound quality. All signals benefit from a high-precision, low-jitter, low-phase-noise master clock, minimizing noise near the oscillation frequency and optimizing transmission accuracy. *Bulk Pet is a registered trademark of Interface Co., Ltd.