Do Audiophile Cables Matter? Here's PROOF!

I have shown a curiosity for Cables used in a System across the past few years.
Only with a Mind Set to see if a Interface could be perceived as a improvement as a result of a exchange.

As part of my investigations, I have accepted invites to Speaker Cable and Phono Cable Bake Off's where there has been a substantial value of items up for audition at each session.
My recollections are that certain cables do not belong in a system, and this is even more of an eye opener when it is a very expensive cable that appears to be a unacceptable interface.  

I was originally a user of Copper, and this has remained at present apart from my 5 Pin DIN Phono Cable which is OCC Silver.

I started changing RCA and Speaker OFC Cables for PC OCC Cables, and for me their was no going back to the OFC as a single type of material used throughout a system .

The PC OCC has transformed the Low End of Bass Delivery, their was a Coloration in the lowest frequencies using OFC that could be called muddiness.
When PC OCC was put into use throughout the System, the perception that the Bass was now cutting off much more cleanly and honest was very strong, which was then allowing the Mid's and Highs to deliver a much more desirable presentation.
Another interesting experience was that Sibilant was less intrusive with OCC in use.  

The Silver PC OCC when used on the Vinyl Front End improved on the Bass Delivery even further.
When Silver was used as a Digital COAX it was rejected immediately, as their was a Shrillness, that was for me undesirable.
Copper has proved much more to my taste.

I could happily rest at this position, but when such a large investment is made in the Devices the wish to extract that little extra over rules my procrastination.
Equipment Support, Tube Rolling and Cable Exchanges are all part of my intentions for my system.
The Cable Exchanges are the main focus as I have spent time on the Supports and Tubes and have got to a place I am very content with at a cost that is not excessive.   

I am at present showing a further curiosity and looking into acquiring PC TripleC and D.U.C.C Cable to see if there is any more perceivable improvement that can be noticed to Justify any further cable purchases.

I have started with a Purchase of of Cartridge Tag Wires and a 1 Metre Power Cable, which can be used on Phonostage,  Pre Amp'  DAC or Transport to see if it has a noticeable effect.