I generally just skim through the weekly collection, but this is one I definitely need to chime in on. I used theses cables for the first time over 41 one years ago because I became "house sound" for what was then a new theater complex. The cables were there and attached to Neumann microphones. I began recording minimally miked classical music around the same time, and quickly discovered that nothing was a substitute, not Mogami, not Canare, nothing else. They are unsurpassed, as nearly as I can tell. Superior copper content and low capacitance. Bare copper shields around each pair of the star quad configuration, then wrapped with non woven thermally bonded polyester, coated inside and outside with aluminum (this becomes the isolation layer between the conductors and shield). Finally a double Reussen shield of bare copper enclosed in a soft PVC jacket. They're flexible, quiet - low microphonics - and the RF immunity is unbeatable. Manufactured in Austria. I'm not a sales guy, but I do pay close attention to my cables and these are one of the best kept "secrets" of the audio industry. Gotham GAC 4/1Ultra Pro #11301. Lew will answer your questions.
http://gothamaudiousa.com/analog.htm