I had the neighbor kid across the street help me put his system in his 2000 Eclipse(had him pull his door panels in case they split on me and he wanted to learn), and he had a pioneer entry level from W-Mart. 2,5v?I believe 2 sets rca.. Just didnt have many settings nor features,, I ended up adding a pre-amp EQ I had sitting( Earthquake 7000 I believe) It helped out for the time being.We put an XFL DVC2 ohm 12 in 2.0 @32 htz on a PPI-1k and put a set of Polk DB 6,5s in there on the PPI 600.2 and he later wanted just a little more highs up front so we put a set of Kicker KS 20 tweets about mid door height on an old Concord 20.2 sounds pretty good .Found a JVC of which had JVC/Kenwood sticker on back.. we put that in later and he really enjoys it better.Nice HU for what he paid for it..It was just under $100 bucks