Marantz 4400 MONSTER Quad / Stereo Receiver Tech Tested. This receiver has been tested by my technician. He found no need to replace anything. And I’ve been using it for more than 30 days now. Tested various sources inputs and controls. aux, tuner, tape and phono tested. Appears to be working as it should. Excellent sounding receiver. And lots of power. bottom left corner slightly bent (see photo. very minor). Service sticker on back (not sure how long ago it was serviced). As with a...ll old electronics. Selling as is. Includes original box which is a bit tattered and has tape. Two original styrofoam packing included as well. Will double box Decoder compartment on bottom. Decoder is not included. IMPORTANT: Because of a few buyers out there that take valuable parts out of stereos and return for full refund (Sorry to say I've been a victim of this.) Selling this unit for parts or repair. NO RETURN. OK to pick up and demo in central New Jersey.