At the moment I currently only use a basic guitar amp, but a few of my friends have 'heads' on top of their amps. What is the purpose of these? What do they do that the amp doesn't do?
I like to practice at home with my electric guitar, but I have to keep the volume low, so I usually use headphones connected to my P.O.D. 2.0 guitar direct box. But sometimes I'd prefer to use ...