Originally Posted by Bozanimal
Any of you added the Alpine KTP-445U to these stock head unit upgrades you're doing? I'm looking at a slightly different route, but I hear good things about the Alpine Power Pack. I'm curious if anyone has any experience with them here, since the stock speakers seem pretty decent in the later-model Imprezas.
i am happy with the CP635U Head Unit, Alpine KTP445U, and Polk DB6501 speakers.
could use a little more bottom end, but for now everything is good enough