im currently running a Mobile Authority a1002 amplifier. this amp is rated at 1000 watts. now i know that this most likely isn't true wattage so my question is this. would i notice a difference if i changed from this amp (which im running at 1000 watts into my sub) to something in the ways of a JBL p600.1 or so? if i did notice a difference, would it be in SPL or more in sound quality?