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

McFun Red Amp K2

1 × 44 watts, channel 1 at 4 Ohm
2 × 41 watts, channel 1 + 2 at 4 Ohm
Current consumption 9,9A
efficiency 61,3%

1 × 128 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 17,3A
efficiency 54,7%

128 watts total power