Vic was awesome. I have a 08 Denali with the Bose system in it and wanted to put two twelves and a 2600 watt amp in it but wanted to leave my stock nav system in it. I bought a jl audio clean sweep for the RCA cables and had Vic come down and put it in. Man does is hit hard. He is very knowledgable about stereo stuff and told me I should think of adding a cap which I am going too ASAP I give him five stars thanks again Vic :)