provided by adideluxe from the Hififorum

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

ESX Q275.2

1 × 339 watts, channel 1 at 4 Ohm
2 × 328 watts, channel 1 + 2 at 4 Ohm
Current consumption 85,1A
efficiency 57%

1 × 918 watts, channel 1 + 2 bridged at 4 Ohm with 13,2 V Versorgunggspannung
Current consumption 144A
efficiency 48,3%

918 watts total power