impedance matching options for 95 A6Q sedan

Fri Jun 16 10:25:44 EDT 2006

Looking to pick up a new Alpine receiver
http://www.alpine-usa.com/en/products/product.php?model=CDA-9856 so I can
hook up my I-Pod without an annoying cassette or radio adaptor.  I am
wondering about interfacing a different reciever than the stock Bose unit
when it comes to impedance matching and output voltages. 

I know I will have to make a harness, but thats pure wiring.  Anyone have
any recomendations as to what I might need to ensure I am getting good sound
out of the stock system?

Thanks
Rob

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