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

Taramps DS1200X4

1 × 272 watts, channel 1 at 4 Ohm 
2 × 264 watts, channel 1 + 2 at 4 Ohm 
4 × 256 watts, channel 1 up to 4 at 4 Ohm with 13,4V supply voltage
Current consumption 89,1A
efficiency 85,8%

1 × 841 watts, channel 1 + 2 bridged at 4 Ohm
2 × 729 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm with 13,3V supply voltage
Current consumption 141A 
efficiency 77,8%

1458 watts total power

measured up to the clipping limit