I'm new to the car audio game. Right now I just have the stock radio in my truck, but I just ordered a Pioneer PRS-D4200F amp and four Pioneer TS-D602P speakers. I have a Pioneer DEH-P5900IB HU that I bought about 1 year ago that I had in my old truck. I don't know if its odd to have all components from the same manufacterer, but I'm funny like that. Next up is wiring and such.