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

Ground Zero GZTA4.120MK2

1 × 67 watts, channel 1 at 4 Ohm
2 × 62 watts, channel 1 + 2 at 4 Ohm
4 × 56 watts, channel 1 up to 4 at 4 Ohm
Current consumption 27,1A
efficiency 61,5%

1 × 196 watts, channel 1 + 2 bridged at 4 Ohm
2 × 161 watts, channel 1 + 2 and 3 + 4 bridged at 4 Ohm
Current consumption 43,9A
efficiency 54,8%

322 watts total power