Having read so many times about how mains cables will improve performance over bog standard out the box i decided it might be time to upgrade. Having read the DIY mains cable thread which i think comes in at about 17 pages or so i decided to have a go a making a cable. I used the 3 triple helix weaved design mentioned on the thread with a rhodium plated plug and wattgate i got off ebay. I burned it in for a couple of days on an old pc then tried it on my amp and dvd. In both cases i put on a few cd tracks to see if i could tell a difference, i half convinced myself listening to Bowies Changes the new lead sounded a bit better but everything else i think was the same. Next i tried some screened cable as used by isotek with the same plug and wattgate. Music wise again nothing too obvious so i tried it on my pj. I decided a cartoon would be the easiest way to spot the difference in colour so i sat down and watched an episode of justice league i had recorded (i am only 31 after all). I watched the first minute or so with the standard lead then turned off fitted the new lead and started again. It appeared to me that the Flashes costume appeared a bit brighter the red a bit more strong green lanterns eyes i thought where more green than when i've watched it before (just occurred to me i be everyone who reads this knows who the flash and green lantern are most of my non AV mates wouldn't have a clue) on the whole i did think thing looked a bit better. Once it had finished i swaped back to the old lead and watched the last minute again only now i wasn't convinced it looked any better at all. Question is how obvious do you guys who use specialist mains cables find the difference. Although the cable was not supplied direct by isotek given the parts used the cable would be nearest to its super elite cable which retails at about 130 quid (again will point out this cable was not supplied by isotek there cable my be a million times better). Two things i will point out are that 1) The screened cable hes been tested with no burn in as yet (don't know if that matters for a screened cable (bet it does)) 2) My cinema room has its own mains circuit (i've been told both that this makes a difference and also that it does not by different people, though when the room was first wired i found that a tv with a video sender i was using down there doing some work looked to have a better picture than normal) so as a result i may just have a very good mains supply anyway.