provided by Jimbo195 from the Hififorum

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

Autotek SS75.2

1 × 63 watts, channel 1 at 4 Ohm
2 × 58 watts, channel 1 + 2 at 4 Ohm
Current consumption 14A
efficiency 61,1%

1 × 174 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 24A
efficiency 53,8%

174 watts total power