I second gleenedick. Not really such thing as too much power. It's the distortion that results from over driving a low power amp that will damage speaker drivers. I have two of these amps and use them sometimes with a pair of old vintage JBL's that are very efficient and they sound great. My main speakers are Vandersteen 3a signatures that are only 86 db efficient and these amps have plenty of power for them as well. (Running bridged mono 275 per ch. with both sets of speakers) No problems at all. Good luck!