Do you get the whine while using an iPod (or other) through a powered dock connector?
The whine is from a ground loop, I hooked up my iPod with a powered plug and I get the whine aswell, if you are just using the CD player or an unpowered input the whine should disappear. It is impossible to remove the whine completely but you can buy a $12 ground loop connector at Walmart that will make the whine almost unnoticeable.
Hope this helps!
Porscha
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