I just installed a RAL Cryosilver umbilical today between my Pass Labs XP20 and power supply. I purchased this cable used. I noticed immediate improvements in 3D soundstaging and increased separation of images. I had the same experience with using a RAL Cryosilver umbilical on a Supratek Cabernet preamp. I purchased that one new and I had immediate positive results.
My umbilical cable between my preamp and its power supply.
I spoke about this on the topic amps preamps but want to say a few words here about it. I ordered my Revelation Audio Labs cable from Brad, and he designed it, and shipped it, within a week’s time. It has been a week now that it has been part of my system, and this one change, has been one of the most significant IMPROVEMENTS I have experienced in all of my years in this hobby, and business. It is the Passage CryoSilver Reference "Dual Conduit" 1 meter. Custom mage for my preamp. Listening to "A Tribute To Jack Johnson" by Miles Davis, I am hearing details within the recording, I have never noticed before, and I know this recording very well (I thought I did). I feel I have an entirely upgraded system by this single change, and my preamp, is a GEM. Happy listening to all of you. My best, MrD.