The Earth was known to be flat for thousands of years. There are literally countless examples of known fact that are constantly being overturned with new knowledge.
So, if 2 cables were randomly blind tested, and several people noticed a difference every time… but they measured exactly the same… what then? BTW.. I’m not saying measurements are bad. I’m just saying that the ear is also a measurement device, and can’t be totally discounted.
IF 2 cables were randomly blind tested and even 1 person (witnessed and verified) can actually reliably notice a difference then .... sure there is clear evidence that something IS different.
Your claim is they 'measure' the same which no cable ever does. Every different cable has different properties.
For cables to 'have a sound' the waveform MUST be changed in such a way that it becomes audible.
Now.... the recording thus must be 'better' than your average interlink cable's performance to make that difference audible.
I mean ... for fidelity to increase the signal has to be 'worse' using the cheaper cable so other cables (read cheaper) must 'remove' something that expensive cables do not remove.
Consider electronics is much worse than that (measurements say so). For that to happen the cables on the recording side and recording equipment MUST be 'better' than the cable.
Simply because 'better' implies no change is happening and regular cables obviously 'change' things for the worse otherwise there can't be an improvement.
Should you ever want to prove that cables can sound different in front of an audience with a well executed blind listening test do the following.
(It is kind of cheating but in the cable world you HAVE to)
IF I use a source with a VERY high output resistance or a 'complex' (also high) output resistance (say a transformer) I am 100% certain 2 different cables that 'measure transparent'
on low output Z test gear can actually
sound different.
This is largely because of its
capacitance interacting with the
high output Z forming a different roll-off point well within the audible range. So in this case interlink cables do matter. Note.... Kimber does NOT publish that data and is why
it would be great if that was measured independently.
So .... you could rig a listening test to show audible differences between (interlink) cables.
In practice one could use a
high resistance 'passive pre-amp' (an attenuator) for this say .... 100kohm.
That, however, would be VERY measurable on the gear that is used for the test but you must NOT show these measurements.
The cunning salesman could even easily 'measure' both cables in front of the public and show an AP555x that shows 'no difference', take those cables, insert them in the (rigged by means of the 'attenuator that has the purest sound as we don't want an active pre as it ads distortion and digital attenuation is a no-no) listening setup and perform a well executed statistically valid blind listening test with many people and prove one cable sounds 'better' than the other.
Make sure no one asks to measure the performance of that system and only invite 'believing audiophiles with golden ears'.
This would be a case as you suggested (measure transparent yet sound different), would be totally do-able and make use of a considerable higher capacitance of the 'worse sounding' cable.
In fact it could even happen
in a home situation where one uses a high resistance 'passive pre-amp' between a low output Z source and long cables between that pre-amp and power amps near the speakers (shortest possible speaker cables).
This means that your scenario is actually possible BUT
requires the cables to measure differently (and is why I asked for a simple measurement of resistance, capacitance and inductance).
They will measure 'like a wire' on test equipment but will measure VERY different on gear with a high output resistance and might even affect the audible range.
This is why I asked what the test conditions were (output resistance and load resistance/capacitance). Of course I know what they are (just check the AP555x specs).
It would be kind of interesting to do measurements like this and show that in certain cases a long high capacitance cable can 'sound different' in certain circumstances and then clearly measure different compared to the 'standard' cable test.