hewo, I've got a bass - yamaha - and im about to start gettting lessons. I ahve a pratice setup i rigged up but would prefer something that doesn't require me to wear headphones. I wanty some thing reasonably small and inexpensive to start with but not too quiet. say a mid priced 10"x1, preferably tube driven. Is this dooable ? or can someone point me in the direction of a decent pre/power amp schematic ??