Ordered the MB Quart QSD-216 for the from and their coxial for the rear. Need help on a great amp that will be crystal clear. The front speakers were 700 bucks and the rears at 200 bucks, need an amp to power those, and 2 subs I might get. Still looking for subs, was thinking about the Alumapro BP-12 subs. What do you think for an amp, and how do you feel about Alumapro Subs.