Wayne's Audio Turntable Periphery Stabilizing Outer Ring

I have one. It made a huge difference. Cupped albums are now dead flat. The sonic differences are noticeable. Worth every penny. 

I’ve used the Clearaudio ring for almost 10 years now. It’s become 2nd nature; I don’t even think about using it. Yeah you have to be careful cueing up, but you should be careful anyways!! The CA ring works even with wide and low Koetsu stone bodies, but only JUST clears it for the 1st music grooves. Yes I’ve had it lightly "kiss" the outer edge of a Koetsu (no harm). Cartridges with "out there" cantilevers are no problem, obviously. Probably not for the squeamish, but there have been 0 ring-caused incidents here in 10 years.

The centering mechanism is machined to exactly fit Clearaudio platters, and it works wonderfully. Perfect centering is a cinch. If I didn’t have that, I might have abandoned ring use. Some of those other centering devices look AWFULLY inconvenient. I had a Merrill Heirloom (still have in a closet) and its ring didn’t even bother to come with any centering device - you just kinda eyeballed it. You’re just gonna have to try it to see if you can deal with that aspect.

My CA ring has accumulated several small dings on the thin inner lip. That’s the downside of a very thin inner part (the upside being allowing a Koetsu to clear it). I don’t even know how most of those dings appeared; it’s just fairly delicate and time will take its toll. Doesn’t affect the performance, though.

I love that I (mostly) don’t have to worry about warps anymore. A few records are so damaged in patches (heat damage?) they cannot be corrected by a ring; those go in a discard pile. I’ve encountered just a few of those over the years.

Anyways, summary - I love my ring! Also have a SOTA Nova V with a vacuum clamp that works great, but there’s just something more satisfying about (gently!) ka-thunking a big metal ring on the table for each side, and it looks cool too! The Clearaudio tables are quieter than the vacuum SOTA, too (probably has to do with the bearing as well).

I bought one, used, perfect, nice price compared to new at Wayne's. SS-1 or SS-2, it's downstairs,

https://www.waynesaudio.com/shop

I'm using a walker these days, I'll find which one another time.

It's very nice, impressive quality, has easy centering device. I intended to use it for all LP's, not just warped ones, more stable contact with mat, combined with center weight I use now. Basically, let the stylus move, not the grooves.

Even new 180 g LP's have minor warps I find.

Unfortunately, the weights that hang down just hit the wide rim of my Vintage JVC TT, TT81

http://www.thevintageknob.org/jvc-TT-81.html

So, I'm gonna part with it, just been distracted by medical issues the past 5 months.

All very informative responses, thank you all. Unfortunately there’s no OEM ring for Technics, so either I machine one or 3rd party tweek like Wayne’s … he does have one specifically for Technics which does not employ the hanging weights as the platter perimeter is chamfered. The PITA factor may very well determine how much of a role one of these plays in my listening.

I tried one of these a few years back. the centering hold is not precise enough to ensure an accurate placement of the ring. Secondly the mass was really not high enough on the one I bought to feel it did the job properly. I returned mine, did not feel it really was doing the job correctly.