USA-50 in mint condition. Plexi bottom. Rated at 25 x 2 @4ohms, and is one ohm stable in stereo, 2 ohms bridged mono. Built-in fixed 100Hz high or low pass crossover and it is defeatable. RCA line output. THe amp for sale is the one on the left with the green board. $100 shipped. Please post here or email, kwik9550@comcast.net
