Well, it does do full active. That is the way I was running it before. It also allows separate parametric eq over the tweeters/mids/woofers which the alpine doesn't.forget about that 8volt preout. i had one and i didn't like it that much. that deck was kinda tricky to use and i think the alpine 9855 you got would be a much better deck. i think that alpine 9855 deck can do active but the eclipse 8443 can't. also the 8443 was the model under that 8445 which was the high end eclipse deck. i thought there wasn't much difference between the 2 so i bought the 8443 and that was a big mistake. keep that alpine deck. it's alot better.