Freezer Cryoed Cables...

The improvement may be caused by simply removing and replacing the cables. I found this to be very effective - I assume it cleans something off the connections which builds up slowly over time and gradually degrades the sound without your noticing.

It seems unlikely that freezing them would make much difference, but I've heard other tweeks that I didn't think would work work. Many cables probably get frozen brand new in box in transport to the store, if they are shipped during the winter.

You made me think of something, PRPixel. Maybe if there are foam dielectrics in the cable, freezing causes the little air bubbles to contract. Maybe it takes a few days for the plastic to fully recover even after reaching room temperature. Out there for sure. I doubt I will bother trying frozen, much less cryod, anything any time soon, though. Just a bit too tweaky for me.