Oh no, that Infinity one is fine, I've checked to make sure it can run 3 channels, it's on the Crutchfield review, the sub whichever I get will be run at 180Watts RMS using 2 channels, the other 2 channels I'll be running the front components.
I'm not from the States I'm afraid, I'm from sunny sh!tty Yeovil lol! Somerset. I'm only going on Crutchfield because they had an in depth review of the said amp.
My idea is to keep everything I buy Infiinty Reference, so the comps are get will be Reference, the amp is, and the sub will be too!