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

Alpine 3555

1 × 83 watts, channel 1 at 4 Ohm
2 × 77 watts, channel 1 + 2 at 4 Ohm
4 × 66 watts, channel 1 up to 4 at 4 Ohm
Current consumption 35,5A
efficiency 54,8%

1 × 219 watts, channel 1 + 2 bridged at 4 Ohm
2 × 177 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm
Current consumption 57,2A
efficiency 45,8%

354 watts total power