if I'm getting another cabinet? Right now i have a Genz Benz 410 and I'm planning on getting a 1x15. I don't have the best head (Behringer BX3000T) and i don't want it to crap out on me. I'm just not clear about all of this power amp stuff and what they do... If someone could: 1. explain to me what they do and 2. tell me weather or not it would be a good idea to get one. any help would be greatly appreciated.