Dear Thuchan, smart as it looks, expensive (and thus tempting...) as it is and originating from both our fatherland ( and thus I would love to promote it for its origin alone, - against all global thinking...) with its long time fame for excellent engineer approach - from my now 17 years 1st hand experience with active and passive air-supplied isolation for turntable design, I would always go for the passive option.
I know very well why and have learned from the past. The Halcyonics is active compensation by mechanical means.
Very similar to the feedback-loop in amplifier design and/or pre-compensation in loudspeakers (Backes&Mueller...).
The Minus-K ( almost as expensive, american made and pure passive in a VERY smart manner...) is more than just a serious contender.
In the Silencer you already see the "audiophile touch" - great looks, most money put into the fancy cosmetics - we are so accustomed to.
However - you get 98% of the performance with a Vibraplane for 20% of the money. Proofing again the principle of Pareto (even more here...).
The point is not, whether to use a Halyconics, Minus-K or Vibraplane or a custom made solution. The point is to understand the issue and to fine-tune the solution to the precise needs.
But the main point is - to do it.
Or in philosophical terms and phrases:
Either Descartes: cogito ergo sum...
or J-P Satre: to be is to do .....
or rather Frank Sinatra: schubi-dubbie-doo.........
