First of all, i dont quite hear much of a difference or increase in my sound quality or power. maybe a little, but not much. kind of made me mad that i spent 110 bucks for my CD player not to distort a couple more volume levels. i guess that's why they make 4 channel amps. would not recommend unless you really don't want to put a 4 channel amp together. its kind of hard to fit behind your CD player too with all the wires. but on the other hand. it does sound good!