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

Crunch GTR550.2

1 × 169 watts, channel 1 at 4 Ohm
2 × 156 watts, channel 1 + 2 at 4 Ohm
Current consumption 34,3A
efficiency 67,5%

1 × 493 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 61,2A
efficiency 59,7%

493 watts total power