Where to get a reliable Cryo treatment service for Power cord?

Geoffrey Owen of Helius Designs cryo treats the silver wire he installs in his Omega pickup arm, citing not only improved low-level resolution, but a decrease in the stiffness of the wire, a real good thing in an arm of course.

Jena Labs did a pair speaker cables for me years ago not sure if they offer the service anymore but you could contact them to see if they still offer the service.

At Jena labs they use -329F (liquid nitrogen) instead of -300F (dry/gaz nitrogen) for cryogenic treatment. At -329F, this process perhaps offer slightly a better result especially on nude metal, but it might not be safe procedure for assembled cables like mine having several tight shielding/sleeves. It is fair to say, Jena Labs is among pioneers in US to use cryo treatment on their cables.  Other cable companies like famous brands they usually don't use this process, maybe because of its cost! This is the case in Europe too! However, in Japan almost every cable company is performing this process on their cables.

The cables were sent for cryo treatment and once back, I will write down if there is any improvement!!???!

Because, Cryo treatment changes molecule structure of the metals, I guess I need to break-in (cook) those cables right after!?
@tecknik Did you need to break-in cables after cryo treatment?


cheers,
michel

It has not been established entirely that the liquid cryo process is actually superior to the vapor process and reports of superiority could actually be a simple case of expectation bias. My understanding is that the liquid dunking is only employed at the end of the cryo process which makes sense since the whole cryo process must be carefully controlled (ramp down, dwell and ramp up) over a long period of time in order to avoid thermal shock of the materials. Furthermore, simply freezing in the home freezer can be very effective and permanent so I wouldn't put too much stock in getting much from a 29 degree difference in cryogenic temperatures. Besides why hasn't some enterprising person cryo'd using uh, even colder temperatures. Nitrogen is not the ultimate gas temperature wise.

Rick overy at Ice Age Audio has wire and power cords at good prices. I have many of his cords for yrs.