Yamaha P-2200 Professional Series Natural Sound Power Amplifier 1970s
The power output per channel is as follows
200 Watts into 8 ohms with less than 0.05% THD (Total Harmonic Distortion), 20Hz to 20kHz, both channels driven.
350 Watts into 4 ohms with less than 0.05% THD (Total Harmonic Distortion), 20Hz to 20kHz, both channels driven.