provided by gisewhcs from the Hififorum

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

Helix HXA 500 Q MKII

1 × 72 watts, channel 1 at 4 Ohm
2 × 64 watts, channel 1 + 2 at 4 Ohm
4 × 49 watts, channel 1 up to 4 at 4 Ohm

4 × 42 watts, channel 1 up to 4 at 4 Ohm +
1 × 127 Watts channel 5 at 4 Ohm
Current consumption 41,5A
efficiency 52,8%

4 × 36 watts, channel 1 up to 4 at 4 Ohm +
1 × 171 Watts channel 5 at 2 Ohm
Current consumption 49,2A
efficiency 47,4%

315 watts total power

measured up to the clipping limit at 100 Hz because of fixed preset low-pass filter für channel 5

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

Helix HXA 500 Q MKII

1 × 62 watts, channel 1 at 4 Ohm
2 × 59 watts, channel 1 + 2 at 4 Ohm
4 × 53 watts, channel 1 up to 4 at 4 Ohm

4 × 44 watts, channel 1 up to 4 at 4 Ohm +
1 × 163 Watts channel 5 at 4 Ohm
Current consumption 45A
efficiency 55,9%

4 × 38 watts, channel 1 up to 4 at 4 Ohm +
1 × 253 Watts channel 5 at 2 Ohm with 13,4V supply voltage
Current consumption 58,2A
efficiency 52,2%

405 watts total power

measured up to the clipping limit at 100 Hz because of fixed preset low-pass filter für channel 5