Im looking for some info on the Cobra's stock sound system, the Mach 460. I recently installed a Pioneer double din (p4300 dvd) and when ever I turn the volume up past 10 the bass sounds muffled. Doesn't have the same bass/treble oomph as the stock head unit through the speakers. Has anyone come across this before after doing a double din or an aftermarket HU install? I was talking with my buddy about it and he thinks that its because the Pioneer is using more power vs the stock head unit. Does anyone on here know how much power the stock head unit uses? Im thinking I just need another amp. :shrug: I figured the two stock amps would be enough. Need Input :beer: