class d, i know that i think the model number was something like MC... something like thatis it class D or A/B? Its mono what ever it is.. Nice little amp though.. I am going to say about 300wrms 4ohm 600wrms 2ohm only 4 and 2 ohm stable.
**** i didnt know ma amps were worth a shit!MA Audio HC-2501
250W @ 4 ohms
450W @ 2 ohms
750W @ 1 ohm
1250W @ 0.5 ohms
Some of them are over-rated quite a bit. I remember they had some amp they had rated at 3000W @ .5 ohm, it turned out in bench tests it only made around 1800W.**** i didnt know ma amps were worth a shit!