Rated power measured according to DIN 45500 up to 1% distortion factor in 236V

Marantz SM-80

1 × 200 watts, channel 1 at 8 Ohm
2 × 181 watts, channel 1 + 2 at 8 Ohm

1 × 324 watts, channel 1 at 4 Ohm
2 × 261 watts, channel 1 + 2 at 4 Ohm

522 watts total power