To give a little substantiation to the things I am saying, I own AT 616 Pneumatic Footers in quite a large number of the footers.
The AT 616 Feet have been loaned out for a broad selection of individuals to receive demo’s of the footers in use at a few locations in the UK.
As a result of demo’s given, there are now Townsend Sleds, Plinths and Gaia Footers in use by individuals who have received AT 616 Footers.
As a result of being demo’s speakers with Townsend of Gaia Footers used others have adopted the footers.
Being fortunate to know how close the Townsend and Gaia is a influence on a Speaker Sound as a result of follow up visits and hearing the comparison, I can say in he homes visited either with a Speaker on a Townsend Support or a Gaia Support, the AT 616 when added is as good as identical.
A multitier Plinth as described produced an end sound that is very very close as a mimic to a AT 616. Either tidies up the lower frequencies and gives the upper frequencies new space to make this range of frequencies presence known.