I'm thinking of buying a bluetooth adapter with RCA out so I can attach my iPhone to my amps. The only disadvantage I can see here is that I'll have to do all of my gain adjustment manually. Anyone seen a bluetooth adapter with multi channel out?

have not seen anything multichannel, but more decks these days are coming with it built in (or as an optional add-on). A bit more clean and user friendly, but you could always just use a 2/3-way active crossover to take the 2-channel input and send it to 4+

SOB why didn't I think of that?!? I think I may actually have one in my garage. Now what I REALLY need is an active crossover with bluetooth built in so I can control it! A guy can dream can't he? Thanks for the memory jog.

Maybe I should just buy a deck with bluetooth and hide it...