provided by cwolfk from the Hififorum

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

Pioneer GM-X922

1 × 173 watts, channel 1 at 4 Ohm
2 × 160 watts, channel 1 + 2 at 4 Ohm

1 × 437 watts, channel 1 + 2 bridged at 4 Ohm

437 watts total power