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

Blaupunkt GTA 475

1 × 85 watts, channel 1 at 4 Ohm
2 × 80 watts, channel 1 + 2 at 4 Ohm
4 × 71 watts, channel 1 up to 4 at 4 Ohm
Current consumption 32,7A
efficiency 63,9%

1 × 253 watts, channel 1 + 2 bridged at 4 Ohm
2 × 196 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm
Current consumption 56,4A
efficiency 51,5%

392 watts total power