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Stitch wrote:

When you look at the data sheets, you see, that they have different Hz range with different weight. A reason why I added some more mass to my Micro which is sitting on a VP.

Actually it is not my observation. In my experiments what I concluded was that not only mass is factor but the distance between the legs – a larger unit, with legs located further apart work better. I did equalize the masses of small and large units accordingly. Also, the air pressure in the pneumatic legs has some intricate relation with mass.

Stitch wrote:

There was a discussion in Forums about those units in general and real Audiophiles think, there is a war between active/passive devices and those expensive ones work better than cheap ones ("My 2 Hz work better than your 2 Hz...")

How, did I miss it? A war without me? I feel violated! In fact, I never heard anybody mention the active devices before. I also have no understanding what principle they use. My interest in active devices, if they work, would be to use them creatively. For instance I would to have very light TT on active devise and to inject …. dither from such an active platform. You what we have vibrations then we recognize them as negative because they have harmonic stricture that we can distinct. How about if a such “active Vibraplane” would inject a totally random vibration, sort of equivalent of “white noise” or the dither in its original meaning:

“…one of the earliest [applications] of dither came in World War II. Airplane bombers used mechanical computers to perform navigation and bomb trajectory calculations. Curiously, these computers (boxes filled with hundreds of gears and cogs) performed more accurately when flying on board the aircraft, and less well on ground. Engineers realized that the vibration from the aircraft reduced the error from sticky moving parts. Instead of moving in short jerks, they moved more continuously. Small vibrating motors were built into the computers, and their vibration was called dither from the Middle English verb "didderen," meaning "to tremble." Today, when you tap a mechanical meter to increase its accuracy, you are applying dither, and modern dictionaries define dither as a highly nervous, confused, or agitated state. In minute quantities, dither successfully makes a digitization system a little more analog in the good sense of the word.” – wikipedia.

Stitch wrote:

Using such a device below a turntable (for example) is definitely an advantage. The VP does not only eliminate the vibrations on top, influences via Air or floor are also eliminated. I can easily check it, when my cartridge needle is in the groove, Preamp is 50% and I make tocs with a pencil onto the rack, the turntable chassis,the platter, onto the record...Without such a device I can hear very loud "tocs", specially when done close to the needle, with the working VP it is gone totally and very close at the needle it is soft.It is cheaper than a cable, I guess, that is one reason why the typical audio Moron does nor jump for it (and the next is, he does not understand it anyway)

What you describe is what Vibraplan does, right? What advantage you feel an active devise has if you use them?

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