Resolution Audio Opus-21

Like new Resolution Audio Opus 21 CE player.  Unique 2-box design by SF audio cult figure, Jeff Kalt.  Elegant.  Consummately musical.  Lightly used in smoke-free environment.  See reviews below:
http://www.6moons.com/audioreviews/resolution/opus21.html
https://positive-feedback.com/Issue1/resolutionaudioopus21.htm

Technical Info:
The predecessor to the Cantata Series, the Opus 21 series of components were designed to work seamlessly as a system or easily integrate with your favorite two-channel components. The Opus series is discontinued and no longer available but information is provided here in support of this popular series.

Please visit the systems page for configurations of Opus 21 systems.

Opus 21 CD Compact Disc Player

The Opus 21 CD Player is the culmination of 10 years of digital audio development. It couples our refined multi-bit DAC design with an ATAPI-bus drive that enables ideal low-jitter design and reads all discs, including CD-R/W, SACD-hybrid, and copy-protected discs, with ease. By moving the power supply and display to a second chassis, the critical audio circuitry is free of interference, bringing out more detail than ever. Three-dimensional circuit construction, while more costly, dramatically reduces signal path for unparalleled precision.

We use the finest multi-bit DACs available, as we have yet to find a superior alternative DAC architecture. Our custom DSP-based digital filter uses synchronous upsampling, as we have found that asynchronous designs create audible artifacts. By implementing volume-control in the analog domain, full performance of the converters is maintained independent of listening level.

• 4 BurrBrown PCM1704 24-bit converters
• 16x digital filter upsamples to 705 kHz/24-bit
• analog-domain volume control
• Balanced and single-ended outputs
• digital input operates up to 96 kHz/24-bit enhancing two-channel home theater

Opus 21 PS (Power Centre)

The power centre serves not only as an outboard power supply, but also as a central controller for the full Opus system.

It is included with purchase of the cd player and contains all of the logic necessary to control any Opus series component. When the system is powered-up, the individual components identify themselves to the power centre, which then knows what capabilities are present.

When the s30 amplifier is added to the system, a 100VA toroidal transformer is added to the power centre to supply the amp’s main output stages. The power centre has provision for a second 100VA transformer for future amplifier products.

This flexible design affords all of the benefits of external power supplies, while minimizing the number of separate chassis required.

Only a single power cord is required for the entire Opus 21 system.