I agree that a power conditioner, UPS, and so forth makes a custom power cord of no use if the stock power cord is attached properly and made from quality materials. That said, a custom power cord is usually a good thing for an amp. Even a little bit of noise can get amplified a lot when you have 3-mile Island powering your speakers. But, that's me. I like dark sound that gradually peels the paint of my walls.
Denon 3803 No Detachable Power Cord Why?
I recently bought a 3803, to upgrade the cord I have to void my waranty, doesn't Denon want their equipment to perform it's best? I also purchaced a Denon 2200 DVD it has a detachable cord and it's half the price! Is it worth voiding my waranty to upgrade or should I just sell and buy an amp & pre/proc and be done with receivers?