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

Rockford Fosgate Power 550X

1 × 101 watts, channel 1 at 4 Ohm
2 × 96 watts, channel 1 + 2 at 4 Ohm
4 × 86 watts, channel 1 up to 4 at 4 Ohm
Current consumption 38A
efficiency 67,4%

1 × 303 watts, channel 1 + 2 bridged at 4 Ohm
2 × 256 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm
Current consumption 65,3A
efficiency 58,1%

512 watts total power