The only power cord I have heard make a difference was a broken power cord vs a working one. There is a problem that Meridian power cords are not shielded though. I have heard veryclearly and unshield powercord degrade an unbalance linelevel cable. I could hold the cables together and get hum and seperate them and have it stop, in real time. It's a good idea to use shielded power cords so you don't have to worry about routing. My pioneer plasma (both display and media box) came with shielded power cords, kudos to pioneer.

- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
HT: G61RSL, 4x5K, 5.5KHC, 2xSC6000, Transporter, HD621, Philips BDP7501 4K, Tivo, 65" LG OLED 4K C6
Computer: Foobar2000, 5K, Mojo, HiFiMan HE1000 V2