Only for your pocket via increased hydro bill. It will not hurt your amp, just waste power.

Try using the auto-on feature so that the sub automatically turns on and off when you turn your receiver on and off. You just need to make sure that the signal coming from your receiver is strong enough to trigger the auto-on.

Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!