Rated power measured according to DIN 45500 up to 1% distortion factor in 13,5V

Sony XES-M3

1 × 185 watts, channel 1 at 4 Ohm
2 × 170 watts, channel 1 + 2 at 4 Ohm
Current consumption 36,3A
efficiency 69,5%

1 × 543 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 64,9A
efficiency 62%

543 watts total power