There are many reports on Jürg Jecklin and his inventions such as the Jecklin float or the Jecklin disc on the net that are worth reading.

Some links to Jürg Jecklin's developments on this can be found here:

Tech History Headphone Review: The 5 Most Avant-Garde Headphones of All Time

https://www.youtube.com/watch?v=7z7fgSU5RjQ

Headphone Review. The Float from minute 3:16

Reddit Vintageaudio zum Jecklin Float

to the article Reddit Vintageaudio

Review at Gearspace:

https://gearspace.com/board/high-end/1043729-jecklin-float-qa-vs-stax-009-007-audeze-hifiman-sennheiser-hd800-etc.html

Headphone Reviews at Stereophile.com

to the article "Headphone Reviews" at Stereophile.com

MDW Webmagazin: Jürg Jecklin – soundengineer with inventive talent

to the artikel: MDW Webmagazin - Jürg Jecklin - Tonmeister mit Erfindergeist