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

Ground Zero GZHA 4125

1 × 45 Watts channel 1 at 4 Ohm
2 × 43 Watts channel 1 + 2 at 4 Ohm
4 × 42 Watts channel 1 up to 4 at 4 Ohm

1 × 144 Watts channel 1 + 2 bridged at 4 Ohm
2 × 139 Watts channel 1 + 2 and 3 + 4 bridged at 4 Ohm

278 watts total power