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

Boston Acoustics GT-28

1 × 261 watts, channel 1 at 4 Ohm
2 × 253 watts, channel 1 + 2 at 4 Ohm
Current consumption 51,3A
efficiency 73%

1 × 864 watts, channel 1 + 2 bridged at 4 Ohm with 13,4V supply voltage
Current consumption 93,1A
efficiency 69,3%

1 × 1311 watts, channel 1 + 2 bridged at 2 Ohm with 13,2V supply voltage
Current consumption 160A
efficiency 62,1%

1311 watts total power