So this does work from what I could hook up. When I had a set-up I remember a dull hum (if Im remembering correctly) but I didnt know if it was the speakers or what. Worked great when I was operating it last. There are 2 or 3 push buttons that stick but Im sure that an easy fix. This is an as-is sale since I'm not too well versed on receivers and also why its being sold as "for parts or not working" bc Im not entirely sure if absolutely everything is working properly.