I had also wondered about the following (similar but different):

If I had a rev 2 with no hiss now. I change speakers and/or amp(s). Now I get hiss. Would they exchange it? Sounds like so if in the 5 years.

I truly believe this: good customer service is priceless.
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If it's not worth waiting until the last minute to do, then it's not worth doing.

KevinVision 7.1 ... New and Improved !!