provided by TimTaler from the Hififorum

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

Phonocar PH-640

1 × 185 watts, channel 1 at 4 Ohm
2 × 160 watts, channel 1 + 2 at 4 Ohm
Current consumption 38,6A
efficiency 61,4%

1 × 484 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 66,2A
efficiency 54,2%

484 watts total power