Orion HCCA250G4:
Power ratings at 12V and 0.1% THD:

2 x 50W @ 4 ohms

2 x 100W @ 2 ohm

2 x 200W @ 1 ohm

2 x 400W @ ½ ohm

1 x 200W @ 4 ohm bridged

1 x 400W @ 2 ohm bridged

1 x 800W @ 1 ohm bridged

THD: 0.1% (4 ohms, 20Hz 20kH)