LOL... good thing you know that, but you'd be wrong. Mac CDs were the 9255/JDM unit internals, but what he's thinking of is that some Clarion amps were designed by Robert Zeff and built in the same factory as Arc Audio.Clarion bought McIntosh so some Clarion amps got Mc internals. I have no idea which amps or if that is even 100% true. I know McIntosh was the highend brand you are trying to figure out.