High end DAC (digital / analogue converter) and headphone amplifier for audiophile stereo systems. In excellent and full working condition. Very small spots of surface rust on screws at rear of unit as seen in photos. Purchased new approx 10 years ago. Upgrading whole system and no longer require this component. Full specs here: The Beresford TC-7530 Bushmaster is a digital-to-analog converter (DAC) featuring four digital inputs (2x coaxial, 2x optical), a headphone amplifier, and a fixed analog output. It utilizes Burr-Brown converters and supports sample rates up to 192kHz with a resolution of up to 24 bits. The headphone amplifier is designed to drive loads between 12 and 600 Ohms, with a power output of 700mW. Key Specifications: Digital Inputs: 2x Coaxial (S/P-DIF), 2x Optical (TOSLINK). Analog Output: 1x Fixed output (Cinch/RCA). Headphone Output: 6.3mm jack, with volume control, designed for 12 to 600 Ohm headphones. Headphone Amplifier Output: 700mW. Frequency Response: 20Hz to 20kHz. Signal-to-Noise Ratio: >103dB. Channel Separation: >100dB @ 1kHz. Total Harmonic Distortion: <0.0015% @ 1kHz. Resolution: Up to 24 bits. Sample Rate: 28 to 192 kHz. Converter: Burr-Brown. Power Supply: 12V DC (external AC-DC adapter included). Dimensions: 180mm x 140mm x 50mm. Other Features: Direct Current Sink for worldwide use, gold-plated connectors, solid black metal case, CE certified. Review link here: https://www.head-fi.org/threads/beresford-tc-7530dc-bushmaster-review-giant-killer.648659/