Is there an easy way to test the power output of a poweramp? I bought a Yamaha p2700 not too long ago and I don't think it is putting out a full 1000 watts bridged. My Hartke 3500 (350 watts @4 ohms) is much louder than I can get my Yamaha P2700 run through a preamp into the same speaker configuration. Is this something a guitar/amp technician could check pretty easily or would I need to take it to an electrician of some type? Advice and comments are welcome.