Quote:
Originally Posted by cossie1600
The 2500 and 4500 have the same audio, the 4500 just has a bigger screen. Compare to the base HU, there is a notable difference with the 4500. I am still pissed that the App Radio feature doesn't work with this unit
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actually the 1500DVD/2500BT has 2v pre-outs and 4500BT has 4v preouts and bigger screen.
the software is the same though. 2v preouts might be too soft to run the RCA in's for the bose. rule of thumb had been to use 4v+ for RCA in harnesses for bose.