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

Sony TA-F170

1 × 46 watts, channel 1 at 8 Ohm
2 × 42 watts, channel 1 + 2 at 8 Ohm

1 × 74 watts, channel 1 at 4 Ohm
2 × 63 watts, channel 1 + 2 at 4 Ohm

126 watts total power