The Sony STR-DH510 5ch 90W/ch 8Ω Dolby DTS HDMI Digital A/V Receiver is a black audio receiver with AM/FM radio capabilities. It supports various surround sound formats like DTS, Dolby Pro Logic II, and Dolby Digital. With multiple audio outputs and inputs, including digital coaxial RCA, HDMI, and optical digital, this unit offers versatility for connecting different audio devices. The receiver has a power output of 90W per channel and is tested to work properly. Made by Sony, this receiver is designed for home audio systems and provides a high-quality listening experience.