Isolation Feet for Garrard 301 wood plinth

Agreed.

3 feet always sounds better than 4.

late coming back but,

in the end a set of three Iso Acoustic feet sized to my overall table weight were ultimately the best overall sound. 

I have quite a history of experiencing footers under Plinths and Sub Plinths and equipment.

I used Manmade Products such as, Composites both Hard and Soft, Putty Type Substances, Sand Box, Sorbothane, Sorbo-Rubber, Foams of Different Densities (This always available), Adjustable Footers from certain brands with slight differences to the designs, AT 616 Pnuematic Footers, Solid Tech Feet of Silence Footers and Metal Spikes.

For Natural Materials used, I have Cork ( This is always available) and Black African Hardwood such as mpingo.

From the list of the above, I can assure that the mpingo was the shortest used on a trial and not kept. The Composites and Putty Types were superseded in use in the early days and the Sand Box and Sorbo Type Materials were used, the Sorbo Rubber for very heavy equipment.

To Date I still use foams of various densities and Cork, these materials are very good at tweaking a colouration out when detected, when working with these materials, even mixing them. By adding them in layers to increase the depth, the process of building up the layering can significantly contribute to gathering a loose bass and improve on this. The real attraction is that it is cheap to have available in a 5-8mm thick material.

I went onto the 'AT 616 Pneumatic' which was a very impressive introduction and that was bettered by the 'Feet of Silence', when directly under the Source. I use these to date with the 'FOS' supporting the source and the '616' Supporting the Sub Plinth.

My Local HiFi Group loaned the '616' and 'FOS' and become converts. 

They then brought in readily available feet to compare for the ease of purchasing and for the fairer pricing, the footers the Group have bought into are Iso Acoustic, of which I know some use the Gaia and some others use the Orea. As these are offered at a discount through a source a Group Member knows, there are systems utilising multiple sets of Iso Acoustic Feet.

My last demonstration of an Idler Drive in use was a Garrard 401 > Origin Live Illustrious> Sumiko Pearwood which was mounted in a Bamboo Plinth and a Sub Plinth of a material l supplied with AT 616 Footers. To this date from all recollections, the 401 on this occasion was the best I can recollect one performing during a demonstration or from personal usage experience.

I have a modded 301 on a heavy birch ply plinth (see my profile) and I use Stillpoint SS’s (which Stillpoints have since replaced/updated with Ultra SS V2’s). Steve Dobbins, an expert on 301’s/401’s prefers the Stillpoints on the plinth he markets. Last time I looked Artisan Fidelity and Woodsong supply Stillpoint SS’s on their plinths as the default footer. Well, now that I just looked it appears Woodsong is now featuring their latest plinths with Stillpoint Ultra 5 Bullet Spikes.

I have fantastic stability and very little movement when walking around the room but I do get nose when taping the plinth and stand through the system ie cart etc. Its a dull thud but I think some sort of isolation may be in order between one of the layers most likely the plinth and granite.

You no doubt meant "noise when tapping the plinth". This is a subject I have personally taken Michael Fremer to task about. There is no proof that tapping the plinth [and not hearing any sound through the system] correlates with better sound. Sound waves and stylus induced vibration are not the same-at all-as physical contact of one mass against another. Even it did, Fremer’s knuckle rap test may be of some relevance with something like a TechDas or other ultra high-end turntable with a design goal of eliminating all vibration but the 301 is an idler. To attempt to eliminate all vibrational behavior with an idler is going against the design goal. Put differently, my advice with a 301 no matter how modded is to embrace the motor vibration. It ought to be held in check but can not be eliminated and the nature of an idler contributes to the favorable sound. Put differently yet again, you are not going to get digital-type sound reproduction with a 301 and shouldn’t try.