I dont know what you guys are talking about amps being digital. Kinda like what bean said, digital is just 0's and 1's. Only its not really 0's and 1's, thats just how people represent high and low, or on and off. But music is in the form of waves not digital anyways, its analog. So if the amp gets a digital signal it has to take the digital signal it recieves and convert it to analog so that you can hear it. I'm not sure exactly where it goes from digital to analog (well at a d/a converter, but im not sure if thats at the head unit or at the amplifier, i kinda thought rca outs were analog though) but anyways, none the less digital when referring to an amplifier usually referers to the the controlled power supply.. like ma audio amps claim to have a "digitally controlled power supply" i'm not sure what that means but supposedly supposed to be more efficient. But anyways to end my post, i know that some of the best amplifiers ever made were analog, i think thats how the tube amps work completely.
