Yamaha RX-397 100 Watt Natural Sound AM/FM Stereo Receiver (Discontinued by Manufacturer) Speaker A, B or A+B Selection Pure Direct Amplification Super Audio CD and DVD-Audio Ready with Extended Frequency Response 50W x 2 with .04%THD Remote Controllable Motor-Driven Volume Control 50W x 2 with .04%THD Super Audio CD and DVD-Audio Ready with Extended Frequency Response Remote Controllable Motor-Driven Volume Control Pure Direct Amplification Speaker A, B or A+B Selection