I have the same Grande 5 amp driving my center and sorround speakers, and a Levinson No 336 driving the fronts. Both amps are plugged into separate dedicated 20 amp circuits. Both are extremely powerful and heavy-Grande approx 125lbs, ML 150lbs. Both amps are rated 300w RMS into 8 ohms, and double the output with each halving of the load, down to 2 ohms, with no audible distortion. built like tanks. Never a hiccup. I play them very loud. The grande is a very under rated amp, in my opinion, is probably one of the best bang for the buck anywhere. This baby you will enjoy!