Resolution Audio Opus 21 CD Player Used, Working Perfectly, No Remote control Sale is for CD Player and External Power Supply with connecting 20 pin cable and standard power cord Opus Series Product InfoThe 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 The Opu 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 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