provided by DER-KONDENSATOR!!! from the Hififorum

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

Alphasonik HBX-2100

1 × 127 watts, channel 1 at 4 Ohm
2 × 124 watts, channel 1 + 2 at 4 Ohm
Current consumption 30,5A
efficiency 60,4%

1 × 369 watts, channel 1 + 2 bridged at 4 Ohm
Current consumption 53,6A
efficiency 51%

369 watts total power