Boy, Oh Boy! Towshend!

@steakster - wow- you know a hell of a lot more than me about Symposium. My thoughts with my speakers on Segues are two fold- 1) they get rid of/drain internal speaker noise while providing some isolation, and 2, I did not want my speakers being unstable in any way as they are tall and thin. I don’t want them to float like my components do. Peter had to custom size my Segues to have about 2-21/2 “ around the bottom to add stability.

Not sure what you mean by air borne vibrations. The internal vibrations of components are drained by roller blocks or platforms as are external vibrations from the floor.

@vinylshadow- glad to hear you will check with Peter at Symposium. IMHO though, the turntable isolation should be addressed first, but as MC says, it’s and and and and and......you can never correct noise emanating from the source. That noise just gets magnified down the chain.

As far as turntable isolation, is there any difference or betterment between a Symposium Platform and a Townshend platform? Whatever I put under my Basis turntable will also have the separate belt motor on it. The belt motor for my Vertere MG-1 is built into the table.

@millercarbon For my model 12 monoblock amp that is on a Sound Anchors rack w/spikes on discs, behind a Mezzo speaker and near my sub, put pods directly under my amps and power supplies on the top of the stand? Or take off the spikes and put 4 pods, 1 below each leg of the stand.

Then I guess what to put under my Rogue Ares Magnum tube phono drive.

Would anything be necessary under my Vertere MG-1 motor drive that sends the 33/45 signal to my Vertere MG-1 turntables motor? The box is so light I could probably center it over 1 pod. Maybe 2 to be safe. And 2 under my Rogue phono drive as it is sort of light as well?

The main benefit or theory is to allow the component to move on its own, in other words in isolation. A lot of vibration is generated within the component itself. Even with amps. With Pods under the rack the amp excites the rack, which while isolated from the floor is still going to vibrate thanks to the amp, and feed this right back into the amp. Pods directly under the amp will better isolate the amp.

Symposium Iso uses a conical spring damped with foam, similar to Townshend spring damped with an air valve. The Townshend design seems more elegant to me but the proof is in the pudding and I’ve not tried Symposium to know for sure exactly in what ways they differ.

Understood. So placing the isolator under the amp is best.
As far as the Rogue tube phono stage and Vertere motor drive, they will be set close to each other in a rack shelf. Seems like the most economical thing for both is to put both on a Symposium Segue ISO platform. And a consideration is, that platter will be what separates both components from my Classe SSP-800 processor/DAC in the rack space below them. So the ISO platter will block any vibration etc from the Classe, if that does in fact happen.

Although come to think of it, a Townshend platter would likely work as well provided the pods can be centered on the racks steel bars; whereas the ISO platter is flat across the bottom and will certainly sit on the bars.

I was hoping to put isolation under the Classe but there is only 3/16" of available space above the top of it.

The space is much greater than 3/16". The true available space is from the shelf it sits on to the actual chassis bottom. Most components are on factory feet that are at least 1/2" high. So it gets tight but you really probably have about half an inch available. This is probably just enough for some Nobsound springs. I mean just the springs. Not the whole setup with the footer holding the springs, just the bare springs alone. 

Best part about this is, won't cost you one thin dime. Get your Nobsound springs for the motor or whatever, you will have some springs left over after setting them up for that load. Take the leftover springs, squeeze them down and put them one at a time under the Classe. Start with one in each corner, just keep adding until the thing starts to float. Could be wrong but I bet there is just enough room for this to work. Don't cost nothin' but time. What have you got to lose? 😉