Hi, Thanks so much for your review jtcf!
As I've introduced higher end cables the D1 has been forgotten but I think it's still one of the best cables you can get for the money. UPOCC copper from tip to tip, rhodium plated plugs, and litz-type signal wire for <$200/pair!
I think people often look towards cable companies whose highest end offering is similar to their budget, but I'd put my D1 up against any cable from any of the trendy or hyped new cable companies.
I still offer free demos, so if anyone is interested please let me know!