Distant cousin? Shun Mook makes the discs. Shun Mook was around 20 years ago and are nothing really new.
The Mpingo discs didn't do anything in my system but did in a fellow reviewers system with MBL 101s. Interesting thing is that with some of these tweaks, it's more instructive to have someone change them, as was done with the MBLs, while you listen, rather than getting up and then sitting down and relistening. As far the other products go, are you saying the feet and record clamp can't affect the sound?
Only the discs. I know a record clamp and feet can affect the sound.
Many moons ago, I was installing a SigTech in a guy's room. The room was probably 30 feet long by 18 feet wide with 9 foot ceilings. He was using Dunlavy SC - VI's.
He had O N E of the mpingo discs on the long wall, and was describing how it affected the laminar flow and really cleaned up the midrange !! So a single disk of approximately 3 square inches on a wall of approximately 38,000 square inches audibly changed the sound??