I'm using a Pioneer DEH-3200UB head unit, has 4 preouts, and the iPhone uses the USB on the front of the head unit to deliver the sound, I wouldn't even try to hook it straight to the Infinity amp for the exact reason you stated, it wouldn't drive it. I can't remember offhand if the preout volts are 4v or better. I plan on getting some Rockford Fosgate Punch components all around and using a 4 channel to drive them anyway in the very near future, I just want the infinity amp to continue to drive the center channel really, it brings the soundstage out beautifully IMO. I'll be asking you for advice Vic about it all as I go bro, along with the rest of TGC.
And yeah, that's my daughter's high chair!
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