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

Rockford Fosgate Punch P450.2

1 × 186 watts, channel 1 at 4 Ohm
2 × 174 watts, channel 1 + 2 at 4 Ohm
Current consumption 36,4A
efficiency 70,9%

1 × 557 watts, channel 1 + 2 bridged at 4 Ohm with 13,4V supply voltage
Current consumption 64,1A
efficiency 64,8%

557 watts total power