Your favorite OCC speaker cable

Furukawa stopped manufacturing PCOCC some years ago, so Furutech, Acoustic Revive Oyaide, Acrolink, are now using PC Triple C or OCC-DUCC for their better products.
Both are more advanced methods in metallurgy than PCOCC.

OCC is from my experience a much improved wire over OFC, and over the years I have exchanged from OFC to OCC in Copper and Silver on most IC's.
I use Mapleshade Speaker Cable and can't vouch if this is a OCC Wire.

In recent months I have commenced with trials on PC Triple C and D.U.C.C Wire.
At present the PC Triple C Wire is remaining in the positions I have used it, and when attached to other devices there is noticeable changes, that I am coming to terms with.
I need more PC Triple C cables to fully understand the overall benefits throughout the system.    

@pindac Totally agree. I did A/B between Analysis Plus OFC and OCC and the difference was stark. I had a friend switch without me knowing. I could always tell. Upper range opened up, got wider and clearer. I understand the difference now and won't go back. This was true with both digital cable and also with interconnects. 

PC Triple-C copper is what Yamaha uses in their A-S3200 and A-S2200 integrateds. They claim it sounds much better with that cabling.

All the best,
Nonoise

So it appears that the claims of super purification appear to be valid. At their time of release there were naysayers (even metallurgists) claiming that five and six nines copper could not actually be formulated at a non astronomical cost, and that the whole concept was all a big scam.