it's single channel but it's 2 ohm stable. (meaning you can run two 4 ohm subs together to make it 2 ohm). not sure about the install yet i'm thinking sql (or maybe just spl) meh who need sound quality if your deaf right!! not sure on the box size or type yet. i have a bandpass now. (which i like *c'mon flame me*) lol. but i think i may get rid of it and go ported! who knows depends on what kind of subs i am getting. i know i said i wanted sql or spl but i was actually thinking about 2 type r's or type s's but i think the amp might be overkill. anyways