up for sell is a nice JVC solid state receiver model JR-S400 MARK II great worked condition. this unit condition still all original parts. Just the problem was missing two original knobs for the Equalizer only. with replace two knobs pulled out from the good Marantz receiver. and with overall check and tested is in 100% working great condition. and nothing else problem guaranteed. with return accept within 30 days Ebay policy and fast ship. thank you for looking.