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

Soundstream XTA-180.2

1 × 53 watts, channel 1 at 4 Ohm
2 × 49 watts, channel 1 + 2 at 4 Ohm
Current consumption 11,8A
efficiency 61,5%

1 × 151 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 20,6A
efficiency 54,4%

151 watts total power