I was just looking through some half stack setups and apparently a lot of heads have a effects loop or something that you can apparently plug miscellaneous stuff into and it will come through clean along with the guitar. is that right? could i plug vocals into an effects loop or am I dreaming? what do your run of the mill garage bands use for vocals, surely you don't go out and buy heaps of half stacks, a half stack is only barely affordable in my current situation.