Well, I figured I'd switch out the old Infinity 7541a 4 channel, had bridged to 2 channel and was only using 1 channel power an infinity perfect. Threw in the NINe.1, and WOW, much louder, and get this, LESS VOLTAGE DROP!! I believe voltage drop with the infinity was 13.74(unhealthy i know) - 13.0 on some songs, whereas with the eD, goes from 13.74 - 13.6!! Wired at 4 ohm...