Solid state power Amplifier. SN: AH4175. Luxury style power level meters (DB) for L+R channels, Stereo gain control and intuitive meter range selector. Fully serviced and tested, cleaned all controls/jacks 2 times. Replaced 2 low level transistors on preamp board for level controls. Cleaned board connectors. RCAs have typical oxidized look but function well. Unit specs out phenomenally, very low use time, noticeable crack on one corner of the faceplate, 1 inch in size. With all original box, packing, owners manual, factory harmonic distortion test graph. Cabinet can be made available. #8 condition