Classic Yamaha Natural Sound Integrated Stereo Amplifier1987. Made in Japan. 55 WPC RMS into 8 Ohms. 0.01 % THD. 10-50000 Hz. Audiophiles are of very high opinion of overall sound quality of Yamaha gear and this amp is a statement to that. It sounds good no issues at all. There are scratches in cover and faceplate. Please view pictures. Features include - speaker A/B, controls for bass/treble/balance/volume, loudness-(flat/-40db), input selector- phono/cd/tuner/aux/video/tape-1/tape-2 phono selector-(mm/mc) and headphones output Can collect from me to.