I recently had a pair of Audioquest Anaconda XLR interconnects cryo'd by Jena Labs and the improvement is real. These cables had been burned in on a Cable Cooker and then used about 150 hours in my sytsem. We used my buddy's identical cable as reference, having verified previously that we could detect no different between the two cables.
After receiving the cryo'd cable back from Jena Labs, I noticed it needed a slight break-in again, but much less than when new (maybe just 10 hours). When I compared it with my buddy's cable as reference, both of us agreed the cryo treatment delivered as promised. There was more weight to the music, and the noise floor seemed lower. It was easy to tell which cable was better (no struggling to hear a difference this time).
This doesn't anwer you question exactly, but it's the results I found. Also, much to my relief, no problems with the dielectric or any other part of the cable due to the cryo process. They look like new, they just sound better. Jena Labs has some technical information on their site. The main thing to know if you're a do-it-yourself type is that dry ice isn't cold enough to effect permanant change, so don't bother. It takes a much colder temp. and requires a specific immersion and warm-up cycle to achieve the best results. Besides, the cost isn't that much, so why not just have it done right and be sure of the results.
After receiving the cryo'd cable back from Jena Labs, I noticed it needed a slight break-in again, but much less than when new (maybe just 10 hours). When I compared it with my buddy's cable as reference, both of us agreed the cryo treatment delivered as promised. There was more weight to the music, and the noise floor seemed lower. It was easy to tell which cable was better (no struggling to hear a difference this time).
This doesn't anwer you question exactly, but it's the results I found. Also, much to my relief, no problems with the dielectric or any other part of the cable due to the cryo process. They look like new, they just sound better. Jena Labs has some technical information on their site. The main thing to know if you're a do-it-yourself type is that dry ice isn't cold enough to effect permanant change, so don't bother. It takes a much colder temp. and requires a specific immersion and warm-up cycle to achieve the best results. Besides, the cost isn't that much, so why not just have it done right and be sure of the results.