I bought a 4 channel JVC amp from a pawn shop. 50+50 and 20+20. It has no wires and only enough info written on it to test if it powers up. Does anyone have info on this amp. Model no. KD-A154. I would appriciate any info on how good they really are, if i got my moneys worth (traded 2 Sony Xplod 3 way 4 inch speakers (didn't fit in car neways) for it.