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

ESX Signum SE3500D

1 × 625 watts, channel 1 at 4 Ohm with 13,4V supply voltage
Current consumption 54,7A
efficiency 85,3%

1 × 1081 watts, channel 1 at 2 Ohm with 13,4V supply voltage
Current consumption 98A
efficiency 82,3%

1 × 1456 watts, channel 1 at 1,33 Ohm with 13,3V supply voltage
Current consumption 139A
efficiency 78,7%

1 × 1640 watts, channel 1 at 1 Ohm with 13,2V supply voltage
Current consumption 167A
efficiency 74,4%

1640 watts total power

measured up to the clipping limit at 100 Hz because of fixed preset low-pass filter