THX certified 7.1 channel receiver. Four HDMI inputs accept up to 7.1 channels to allow playback of lossless blu ray soundtracks. Built in decoders for Dolby Digital, DTS and SRS surround sound. Audyssey EQ allows correction for room characteristics. Has one HDMI output. The SR7001 also has preamp out jacks so it can also be used as a processor for an external amp. I am original owner. Rated 7/10 due to age this receiver has been well taken care of in a smoke free enviornment. Have box, manual, remote and the Audyssey microphone.