Rated power measured according to DIN 45500 up to 1% distortion factor in 13,5V
Crunch Drive DS-502
1 × 15 watts, channel 1              at 4 Ohm 
2 × 14 watts, channel 1  + 2       at 4 Ohm   
Current consumption 3,1A
efficiency 65,4%
28 watts total power