Facten,
actually I have and obviously you haven't done your research and it's not a sales pitch it's a fact ofc copper is inferior to OCC single Crystal copper and you can ask anybody on here that knows anything and they'll tell you the same thing,OFC copper has 400 Crystal barriers per foot they're little fractures in The wire and the signal has to jump through those little fractures and it causes the sound to be hard, bright cold, edgy, any one of those things are all of those things together, OCC single Crystal copper has zero Crystal barriers in 700 ft so you get a much more natural open three-dimensional sound from OCC wire, companies like transparent and MIT that rip people off when they're using cheap ofc junk wire and charging $40,000 for a speaker wire is a rip off as far as I'm concerned and anyone that pays $43,000 for a piece of wire should have their head examined, and just so you know there's now something even better than round OCC single crystal wire and that's rectangular OCC single crystal wire which outperforms the round OCC, I've been at this for 40 years and I've tried all kinds of cables that's how I know that OCC single crystal is far superior to anything ofc on the market and just so you know my system is worth $70,000.