This listing is for a Harmon Kardon Prelude PC200 Tube Amplifier (894278). This only works in mono, not stereo. There is a screw in the bottom theta is missing. The tuner function worked correctly. The tape function made the music sound distorted because there may be a preamplifier attached to that function. The bass button didn’t change the bass output. The cabinet has some scratches. There are some discoloration marks on the face plate.