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

Macrom SynTech ST4.075

1 × 100 watts, channel 1 at 4 Ohm
2 × 99 watts, channel 1 + 2 at 4 Ohm
4 × 99 watts, channel 1 up to 4 at 4 Ohm
Current consumption 47,2A
efficiency 62,2%

1 × 357 watts, channel 1 + 2 bridged at 4 Ohm
2 × 324 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm with 13,4V supply voltage
Current consumption 91A
efficiency 53,1%

648 watts total power