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

CalCell BST 250.2

1 × 172 watts, channel 1 at 4 Ohm
2 × 172 watts, channel 1 + 2 at 4 Ohm

1 × 506 watts, channel 1 + 2 bridged at 4 Ohm

1 × 531 watts, channel 1 + 2 bridged at 2 Ohm

531 watts total power