This isn't totally relevant, but wtf.
My Good Guys has an "upgraded" demo set-up for auditioning speakers in-store. It features Halo amps in a bi-amp configuration, line conditioners, fancy wires, etc... With all that crap it still has a nasty hum/whine that my simple Onkyo/Denon set-up with standard power cords, etc..., lacks. Maybe all that crap is the cause of the whine?
Regardless, the salesworms think it's the cat's meow!
IMO, use the money saved on power cord/speaker wire upgrades and apply it to better speakers and sub.
