provided by TimTaler from the Hififorum

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

Altai B005VB

1 × 129 watts, channel 1 at 4 Ohm
2 × 119 watts, channel 1 + 2 at 4 Ohm
Current consumption 27,1A
efficiency 65%

1 × 369 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 48A
efficiency 56,9%

1 × 444 watts, channel 1 + 2 bridged at 2 Ohm
Current consumption 74,6A
efficiency 44,1%

444 watts total power