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

Rockford Fosgate Punch 401S

1 × 172 watts, channel 1 at 4 Ohm
2 × 158 watts, channel 1 + 2 at 4 Ohm with 13,7V supply voltage
Current consumption 32,6A
efficiency 70,5%

1 × 551 watts, channel 1 + 2 bridged at 4 Ohm with 13,5V supply voltage
Current consumption 57,8A
efficiency 66%

551 watts total power