How Big of a Difference?

I also agree o c c single crystal wire is the best for audio, harmonic technology and acoustic Zen have the best prices the other companies are just gouging with their crazy prices, OCC single Crystal is much better than anything ofc on the market no matter what price it is.

Isn't it wonderful to be proclaimed not everyone else?

So much silliness in this thread. Supposedly "everyone" can hear a difference using cable elevators, but maybe not you, so I guess you're not part of everyone. 😏  Unless you can get the help of a friend or wife and swap cables without YOUR knowledge of which one is carrying the electricity, you'll only be dealing with confirmation bias or the placebo effect. I mean, if someone spends a few thousand $$$, they dang well should sound better, right?

I haven’t seen mention of Morrow cables.

60 return policy and always seem to have generous discounts. Different price levels. Hand made/assembled. Imo, very good "bang for the buck".

I heard an immediate difference on headphones with their phono cables out of the box. I am certainly hearing more detail with stream/flac reference songs now that they have settled in. Of course, YMMV.

At the time, it took about 3 weeks to get them. Well worth the wait for the price.

I'm not surprised you didn't hear a difference between the USB cables ... that's because there IS no difference. Any decent USB cable brings the 0's and 1's to the other end perfectly fine without errors.

With speaker cable there could be audible differences, given the rest of your setup is capable of bringing out the nuances. But it'll be subtle ... so subtle that only few people with almost absolute hearing will be able to spot them. These people exist, just like there are people who can name the vineyard when they smell and taste a wine, or the 'nose' of a perfume brand, who designs the fragrances. But these people are rare and are well trained ... the question is if you can hear the difference.