I mentioned this in the thread about high-end XLR cables, but thought I would post here in case others are interested in the Iconoclast cables.
After listening to the podcast mentioned in the OP, I spent some time researching these. I've been reluctant to spend big bucks on a set of interconnects since most of the well-regarded cables get very expensive in the 25ft length I needed, and the cable co lending library doesn't have lengths like this available. I wasn't willing to spend thousands of dollars on a cable that I couldn't return and particularly where the manufacturer provides no information about how the cable is constructed or basic LCR measurements.
I have been an audiophile for 45 years and while I lean considerably more toward the subjective side of the subjective/objective equation, I also have an EE background and like to understand why a component or cable works like it does. So I really appreciated how forthcoming Iconoclast is being describing their cables design and construction and why they made the decisions they did.
I decided to give these a try and ordered a 25ft set of 4x4 OCC cables. These cables aren't cheap (at > $4K) but at least Iconoclast/BJC offers a liberal 30 day return policy with no restocking fees. Prior to purchasing these, I had tried Belden 1800F from Blue Jeans Cable, and three DIY cables made from DH Labs Pro Studio, Parts Connexion "The Natural", and Neotech NEI-3001 Mk III. Of these, the DH Labs was my favorite, but each of these cables sounded different and each had things I didn't like.
I've now had the Iconoclast cables playing in my system for about 150 hours, but it didn't take me very long to decide they weren't going back. They are more dynamic with sharper attacks, have a more natural decay, and a noticeable increase in clarity. The slight harshness I was hearing from some of my other cables is gone, and I'm enjoying listing to some of my poorer quality recordings that I couldn't handle with my previous cables.
I don't think any of the cables I built myself are available as factory terminated cables, so I don't know exactly what they would cost, but I'd doubt they'd be more than 30% of the cost of the Iconoclast, so you would expect some improvement. But I wasn't expecting as much as I got and was prepared to send these back and spend the money on other component upgrades. Now I'm thinking of investing in a second set of interconnects between my DAC and Pre, and also considering the Iconoclast speaker cables.