Do expensive cables/wires REALLY make a difference

Cwby8115, Now you've opened a can of worms re. power conditioners.
Check the archives, the comments and theories are endless.

The first question is how good is the AC in ur house now...is it steady 110/120 Volts, does ur neighborhood have brown-outs? Then there is the question of how clean/dirty the AC line is. I believe you should start by having the system on it's own dedicated line and breaker.

01-08-13: Buconero117
Double blind tests conducted by many of our 'authorities' over the last fifty years prove 'expensive' doesn't make the difference

01-08-13: Schipo
Why get out of the hobby? Picking and telling the difference between cables in a double blind test was no better then chance.

01-08-13: Sebrof
Buconeroll, can you link to these or somehow reference them. I see a lot of mentions about these tests but can never ever find any information on them. So I go on believeing they never happened.
TIA

Why does everybody keep talking about stuff that never happened?

I think Larry Greenhill did a double blind test between zip cord and Monster Cable in Stereo Review in the mid 70's...

let's talk about materials.

it is possible to design a silver cable that is indistinguishable from a copper cable. while metals can make a difference, they do not always make an audible difference.

the original question has an obvious answer. some expensive cables sound different from some less expensive cables.

I think it is to do with how much return you want to get for your dollars. All cable makers tune their cables to their own signature. For example Transparent; Cardas are more musical and Crystal Cables; Nordost are more excited etc... so finding one brand that matches your system is the most important. After that, a lot of money will yell a little more improvement dependent of the quality of your equipment.