provided by ben2oo2 from the Hififorum

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

Crunch Power Zone z-5050

1 × 64 Watts channel 1 at 4 Ohm
2 × 61 Watts channel 1 + 2 at 4 Ohm
4 × 53 Watts channel 1 up to 4 at 4 Ohm

1 × 185 Watts channel 1 + 2 bridged at 4 Ohm
2 × 153 Watts channel 1 + 2 and 3 + 4 bridged at 4 Ohm

306 watts total power