Do expensive cables/wires REALLY make a difference

Hi,
they do make a difference.
Get a cheap cable on high end system, how will it sound? DULL to start with. Get a high end cable on a cheap system, how will it sound? BRIGHT to start with.
Still cannot believe that people deny this fact after so many years of same topic.

I've tested many cables over the years, in short, yes cables do make a difference. But it's the material used, the conductors, dielectric, geometry, connectors that determines what a cable sounds like and not the price. I'll go on to say that PRICE is the worst indicator of how good a component will sound, and that's the best recommendation I can give to anyone new to the hobby.
So once you're done assembling the more important part of your system, the speakers, the amp, the source, etc. and you feel your system can improve in a certain area. That's when you can try to improve it with cables.
When you get to that point, I can help in achieving what materials in a cable yield the sound you're looking for.
Good luck on your journey, and enjoy!   

A couple of years ago I invested in a set of Kimber cable speaker, cables, upgrading from standard 12 gauge monoprice speaker cord.  It definitely made a difference in a good way.   More sound stage volume and detail at the same level of power.  

I then changed to a different set of speakers which were at a higher sensitivity level, and slightly more forwards then the previous speakers as well as incorporating a PS20 audio power regenerator with requisite power cable upgrades.  
 

The result?  The character of the sound was not better. The voices whether home theater or in music was too forward. The imaging in 2 channel was less clear.  

Perhaps you know where this entry is going….    I reverted back to my 12 gauge monoprice speaker cable, and the imaging improved and the voices were clearer.  

Cardas’ website says more expensive cables do not necessarily yield better sound and yes, depending on your sound system and what’s on you’re looking for or think you’re looking for more does not appear to be better.   .