provided by cwolfk from the Hififorum

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

Rainbow PCA Four

1 × 72 Watts channel 1 at 4 Ohm
2 × 72 Watts channel 1 + 2 at 4 Ohm
4 × 64 Watts channel 1 up to 4 at 4 Ohm

1 × 225 Watts channel 1 + 2 bridged at 4 Ohm
2 × 121 Watts channel 1 + 2 and 3 + 4 bridged at 4 Ohm

242 watts total power

For 4-channel and bridge operation, a 40A fuse is required.