http://www.edesignaudio.com/wiring.php

You want it set up in 2 Ohm (parallel) on that amp and NO you cant turn the gain all the way up, that is not a volume control. It is designed to match the signal of your HU with the input of the amp.

Previous Owner of 00 SVT Contour #1077/2150 95 Contour SE '01 3L