Factory Radio with headphone/aux jack ?

[spdrcrj]

I bought a rb1 off of ebay and had the same problem. no audio. everything else worked (even the steering wheel controls) just no sound. going to return it and pick up a different one. wonder if there is something to do with the infinity amp or the head unit being pre-amp'd. I dunno, the radio I bought ended up being a 2003 so maybe that's the issue.