Vibraplane

I have the passive Vibraplane and have used it under a VPI HW19 Mk4 and my current Redpoint Testa Rosa. When I had the VPI it was sitting on the top shelf of an Audio rack. When I inserted the Vibraplane underneath it transformed the sound of the VPI to a much higher level. The sound was much more open with much better clarity, the noise floor dropped and there was better dynamics. Overall it made improvements in all areas. The difference was not subtle.

After the VPI I have been using on my unsuspended Redpoint Testa Rosa and it works really well.

I would think that the Vibraplane would work just as well on a concrete floor as it does on a wood floor, The difference is that on a concrete floor there are less floor vibrations that you would have to deal with so there may be less expensive options to get you the proper isolation.