Which would you choose to isolate your turntable?

Willster,

The $1,800 MinusK model (BM-6) you mentioned is their benchmarck. It's vertical and horizontal frequencies are in the neighborhood of the Vibraplane's. Since Brent Rainwater reported that Critical Mass System (CMS) is far superior to the Vibraplane, I was not even considering the BM-6. I was considering their models with better specifications: BM-1, 4, 8, and 10. However, these are much more expensive: all are between $2,300 and $3,950 (with no discounts in sight). According to the Positive Feedback Online review in issue 24, the top of the line Critical Mass' Grand Master is $1,700 (or $1,500 each for 2 or more). The middle of the line Master is $1,250 ($1,100 each for 2 or more) and the benchmark Reference is $950 ($850 each for 2 or more). These more favorable numbers, together with Brent's report persuaded me to start my upgrading with couple of the Grand Masters. If I am fortunate, perhaps I will eventually have an opportunity to compare the Grand Master to MinusK's better models.

Great Listening,
John

you could easily get a cut piece of granite, have them polish it, and put some damping on the bottom. mass is what does it.

I have ordered two Grand Master supports from Critical Mass. I am told it will take 10 to 12 weeks to build them. Don't know if this is typical for every order or if other orders ahead of me are causing a delay. I have been searching for more info on this product but there isn't a lot available yet. I've read everything on their website.

I noticed that Michael Fremer checked out one of the Halcyonics platforms. There doesn't seem to be any flexibility in the Halcyonics line in terms of physical configuration and the prices are outside my budget. I do wish Fremer hadn't been so snitty about the software. It would have been nice to know more about this feature.

The Halcyonics are the only ACTIVE isolation supports of which I am aware.

Where do the HRS platforms fit into this hierarchy?

I made my own out od a Michael Green clamp rack for video applications. With the use of two good cut cinderblocks, some cut 2 X 4's to raise the table, spikes, floor protectors, a level, you are good to go. I support an old TNT MK-3 and you can jump up and down right next to it and will not allow the needle to budge. The Bass is very tight and the mids & highs are 3 dimensional. Mass loading is the key.