Weight, Clamp or stabilizer?


I have a vintage Pioneer PL-560 Direct-Drive Automatic Turntable purchased around 1980. 
https://www.vinylengine.com/library/pioneer/pl-560.shtml
I'm trying to get it to produce the best sound its capable of.  I plan to order a set of SVS subwoofer feet to replace the worn feet (I have an SVS subwoofer and removed its feet and temporarily placed them on the TT base with good results).  I read an article about TT tweaks.  A few things they suggested were an upgraded mat, clamp and isolation feet.  Thing is since the TT is a direct drive I don't know how much extra weight it can take (if any), and the spindle is about 7/8 inches tall so I don't know if that's enough for a clamp.  The original rubber mat it came with is in great shape. Do I need to replace it, too? I'm willing to invest in tweaks to improve this turntable, but not interested in replacing it.
mewsickbuff
A set of four IsoAcoustics GAIA III (which support up to 70 lbs.) retails for $199, $189 on Amazon.
@jrpnde

chakster....Thanks for your recommendation. From what I’ve found, the AT-616 isolation feet are no longer in production. There are some sites that list used ones of a price from $600 to $800. More than double the cost of my table and cartridge.


Yes, if you will compare the price for those vintage Pneumatic Insulators to the new Stillpoints you may think the old AT is cheap :) I think you can find them a bit cheaper if the cosmetic condition is not MINT. But i agree they are rare and expensive.

So....Would the cost of the feet really be worth it given my setup? If I had a more costly table and cartridge then, maybe. I realize that setup is most important for any table. I am looking for a modest tweek that may or may not yield any sonic improvement. Certainly not high dollar feet meant for more exotic setups. Thanks anyway for your input.

The goal of the AT616 is the high weight they can support, my friends using them under Obsidian Plinth of the Technics SP-10mkII turntables and everyone who tried AT616 instead of the stock Technics feet are very impressed by the improvement.

If the turntable is too cheap for such expensive feet then i think 4 x AT616 can be used under the desk supporting all equipment on the desk (if the total weight in under 132lbs or 60kg). Such desk can be a good isolation platform with those AT616 (they can be leveled individually).

Anyway, i just don’t know a better isolation device, so i’m recommending the best one. I have 8 of them.


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