The Revox B 21 is a versatile audio component specifically designed for playback of compact discs. It features a high-quality digital-to-analog converter (DAC) for improved sound accuracy and employs advanced signal processing for enhanced audio performance. The unit is equipped with various playback functions, including repeat modes and programmable track selection. The design is compact, making it suitable for a range of audio setups. The front panel typically includes an easy-to-read display and controls for navigation and settings, ensuring user-friendly operation. In terms of build quality, the B 21 is constructed to maintain durability while delivering exceptional audio clarity. Typical specifications might include a frequency response of 20 Hz to 20 kHz and a signal-to-noise ratio around 95 dB, contributing to its audiophile appeal.