This is a question from a not so informed audiophile. I just purchased 2 12" subs- 400w max 200w RMS. with a recomended 1 c.f. air space. Now I need an INEXPENSIVE 2 channel amp for them. I just want to power them, not be heard from a mile away. The amp doesnt need to be visually impressive, it wont be seen when I mount it. I just need a inexpensive, dependable amp. What brands should I look for that will provide the subs requirements?