Blinking red light inside my Proceed AVP2

Looking down into my Proceed AVP2, through its perforated metal case, I notice a red light slowly blinking on the right side (looking from the front). I never noticed it before, does anyone know what the blinking signifies - is it normal?
I don't know what it does but my AVP-2 does the same thing. It must be normal.
A warrantless wiretap ;-)
Probably normal, but you may want to post that over on AVS in the "Best Sounding Pre/Pros" thread that talks a lot about the AVP2. Some owners on there.