Luxman Announces D-03X CD/Digital Media Player with Advanced Hi-Res DAC Circuit Featuring MQA Full Decoding

April 24 2020, 01:20
Luxman’s latest digital player, the D-03X, includes a host of new features such as Master Quality Authenticated full decoding for MQA files and MQA-CDs, support for DSD files up to quad rate 11.28 MHz, PCM up to 32-bit/384 kHz, Bulk Pet USB transfer and fully balanced output circuitry. It looks very much like a standard CD player, but it truly is a 21st century device, with clever display features, and most importantly, with a chassis design to last including an oversized power supply and meticulous circuit selection.

“The new D-03X supports exciting new file formats and transfer technologies,” says Jeff Sigmund, president of Luxman America.  “But it also embodies the timeless principles of Luxman’s precision chassis and circuit design.”

Player circuitry for the Luxman D-03X features independent left and right monaural-mode Texas Instruments PCM1975 digital-to-analog converters and a high-precision clock module that minimizes phase noise around the oscillation frequency. As a result, distortion is an impressive 0.0009% (USB input), while signal-to-noise ratio is 123 dB (USB input, IHF-A). The D-03X accommodates a wide range of digital audio files via USB input and the free Luxman Audio Player computer software, available for Mac OS and Windows PCs. The software decodes WAV, FLAC, MP3, DSF, DSDIFF, ALAC and AIFF files. 
MQA decoder board.

In addition to conventional, “isochronous” file transfers at fixed bitrates, the USB input supports two modes of Bulk Pet high-resolution audio file transfer. Bulk Pet, short for ‘Bulk Pure Enhanced Technology’, optimizes data packaging and delivery to the DAC, easing the processing load for both the host CPU and the device CPU. This in turn reduces the workload between reading and reproduction, thus enhancing playback stability and ultimately yielding improved sound quality. 

The USB input accommodates 1-bit DSD audio files at sampling rates of 2.82 MHz, double rate 5.64 MHz and quad rate 11.28 MHz, in addition to PCM data at sampling rates up to 384 kHz, 32 bits per sample. The S/PDIF Coax/Optical inputs support PCM at up to 24-bit/192 kHz. The player supports MQA audio files up to 24-bit transferred via USB, optical and coaxial inputs.
Completely balanced amplifier board.

Designed and manufactured in Japan, Luxman’s new D-03X embodies exceptional precision. Because resonance, vibration, ground issues and magnetic fields can all impose subtle degradation in sound quality, Luxman engineers paid meticulous attention to circuit and chassis design. The D-03X incorporates a unique Luxman customized CD transport, which is mounted on an extremely thick aluminum base and protected with a steel top plate.  The result is a highly rigid enclosure, which negates even the slightest vibrations and resonance. Luxman’s asymmetric chassis layout places the CD transport at the left, to further reduce vibration and promote ideal signal flow. 

For maximum fidelity, the differential outputs of the D/A converters feed a set of four identical current-to-voltage conversion amplifiers, operating in balanced dual monaural mode. The following Low Pass Filter amplifier drives the output with low impedance. The player’s power supply features an oversized transformer and independent filter capacitors for each circuit. The composite loopless chassis structure isolates the electronics from ground impedance and chassis currents while shielding against magnetic fields and digital noise. Gold-plated 18 mm RCA outputs accommodate the large plugs of high-performance cables. In addition, the player features high-quality Neutrik XLR balanced outputs for stable transmission to compatible amplifiers.

A classic, understated Luxman design, the D-03X features a fine blasted white finish, vacuum fluorescent display with zoom and dimmer functions and an aluminum remote control with numeric keypad. Luxman’s latest digital player, the D-03X is now available at a suggested retail price of $3,295. 

Luxman America, based in Ballston Spa, NY, is a subsidiary of Luxman Corporation of Yokohama, Japan. Luxman was among the world’s first consumer electronics companies, founded at the dawn of the radio age in 1925. Over the years, Luxman audio components have become synonymous with timeless styling, exquisite fit and finish, and above all, uncompromising sound quality. When the audio industry moved en masse into transistor amplifiers, Luxman continued to create vacuum tube amplifiers without interruption. Landmark products include the SQ-5A vacuum tube integrated amplifier (1961), the PD-300 turntable with vacuum disc stabilizer (1980) and the DU-10 universal disc player for CD, SACD and DVD Audio (2001).
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