Rated power measured according to DIN 45500 up to 1% distortion factor in 13,5V
Impulse SD-520
1 × 138 watts, channel 1 at 4 Ohm
2 × 135 watts, channel 1 + 2 at 4 Ohm
1 × 437 watts, channel 1 + 2 bridged at 4 Ohm
437 watts total power