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

Alpine MRV-T757

1 × 182 watts, channel 1 at 4 Ohm
2 × 168 watts, channel 1 + 2 at 4 Ohm
Current consumption 37,5A
efficiency 66,3%

1 × 488 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 63,3A
efficiency 57,2%

488 watts total power