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

Alphasonik PMA2500A

1 × 224 watts, channel 1 at 4 Ohm
2 × 203 watts, channel 1 + 2 at 4 Ohm
Current consumption 44,3A
efficiency 67,9%

1 × 666 watts, channel 1 + 2 bridged at 4 Ohm with 13,4V supply voltage
Current consumption 79,7A
efficiency 62,3%

666 watts total power