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

Sony XM-235

1 × 44 watts, channel 1 at 4 Ohm
2 × 40 watts, channel 1 + 2 at 4 Ohm
Current consumption 9,4A
efficiency 63,6%

1 × 117 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 16,1A
efficiency 53,7%

117 watts total power