I own an M2-1750-5 amp (5 channels 250W @ 8ohms, 500W @ 4ohms) that I use for my center and surrounds. I've been very happy with it. It has an extremely low noise floor and plenty of headroom for movies (my speakers are a pretty flat 6ohms 89dB @ 1m). I wouldn't hesitate to recommend D-Sonic amps to anyone in the market.