This is an excellent multi-channel or stereo preamp capable of Dolby Digital 5.1 or 7.1, Dolby Prologic II or 2 channel stereo playback. Has both optical and coax digital inputs as well as various analog inputs for many different sources. You can hook up your cable box, DVD player, CD player, turntable, phone, pad, Sonos and many other digital or analog sources. It is a pre-HDMI preamp however, so it will not accept HDMI sources for switching or surround decoding. Even if used for strictly a stereo preamp it is an excellent choice for music reproduction! This unit has Linn's "Dynamik" power supply which makes for superior sound quality over the "standard" PS. Remote and original box included. In very good condition: only one small mark/scratch that I could find and it was so light, my camera could not capture it. Paypal adds 3%. NEW, LOWER PRICE FOR QUICK SALE!!