I see the doubters are on here with there " all cable's are the same". I think if you have a fairly good system you will be able to tell the difference, I did that by going to the HIFI show a couple of years back and Chord had a demonstration room set up where they would play a track with there cheapest RCA cables (C-LINE) then they swapped them out the Clearway, a clear step up in detail retrieval, then in went Shawline RCAs and again a clear step up in depth with a warmer tone, after that I had trouble hearing the difference or at least enough of a difference for the amount of money that these more expensive cable's cost.
For me It was proof enough that spending £90 on RCA cables on a connection between a £600 CD and £500 AMP would pay dividend's and it proved so, I already had £40 C-LINE RCAs and when replacing with the £90 Clearway RCA cables I was very pleased with the gain in detail and midrange clarity, there where instruments not detected before that where now present.
I have now upgraded the AMP to a MF M3i and run a M-DAC+ and have tried a couple of cables Digital Chord Clearway and Tellurium blue Q digital and the Tellurium is better although cost a fair bit more.
Of course if you have mismatched amps, decks, CD players, Dacs, or there poor quality HiFi then your not going to here the difference are you.
For all those doubters out there stop bleating about a multi million pound industry being a load of old cobblers, if it was then by now those that spend vast amounts of money would have just fitted bell wire because if they don't here an improvement then they would look else where, that's because they can afford to.
Anyone out there in doubt go to a good dealers, ask for a demo of a £1000 amp, £1000 CD player and dealer chosen speakers to match that are all run in, tell them to put say Chord C-LINE RCA cables between amp and CD, then listen to a good CD that is not load head banging rock and roll but say Fleetwood Mac, Tusk, Brown Eyes. listen a few times and listen to that fabulous guitar work, then ask for the cables to be changed to Clearway RC's, you will hear a resounding difference in the detail and space around the instruments.
Simple really a child could tell you the difference.