Noticing the VPI Pheripery ring Thread-Which

I think Clearaudio also makes a periphery ring for its TT's.

From reading the Galibier website it seems that Thom can make one for his tables as well.

I owned a ring made by Rudolf Bruil in the Netherlands. It made a big improvement on both warped AND unwarped records, as others have mentioned. Info on it is here:

http://www.xs4all.nl/~rabruil/ttring.html

I had to sell it when I switched to a TriPlanar tonearm. :-(
Part of the arm hit the ring before the stylus reached the runout grooves. That wouldn't be a problem with most arms however.

I'll buy another ring someday. It was worth the extra effort.