I cannot understand how "upgrading" the last three feet of 120 volt A/C could possibly make an audible difference, unless you aren't using the supplied power cord--and what you have is undersized.
I CAN see that with a high-current draw amp, having under-sized house wiring might cause voltage droop under high-demand situations--but changing the last 3 feet of wiring isn't going to fix the under-sized wiring from the circuit breaker/fuse to the wall outlet. (I have 25 feet of 10 gauge house wiring between my breaker panel and the power cord. No problems there.)
Upgraded power cords seems to me to be a marketing gimmick designed to seperate people from their money.
Aragon amps have a gigantic power supply for their rated output. There's plenty of transformer, and supply capacitance. I bet you couldn't tell the difference with a different power cord.
I CAN see that with a high-current draw amp, having under-sized house wiring might cause voltage droop under high-demand situations--but changing the last 3 feet of wiring isn't going to fix the under-sized wiring from the circuit breaker/fuse to the wall outlet. (I have 25 feet of 10 gauge house wiring between my breaker panel and the power cord. No problems there.)
Upgraded power cords seems to me to be a marketing gimmick designed to seperate people from their money.
Aragon amps have a gigantic power supply for their rated output. There's plenty of transformer, and supply capacitance. I bet you couldn't tell the difference with a different power cord.