I've found a similar sound when trying the Ginko with my Scoutmaster. I heard a diminishment in low level detail, backgrounds weren't as black as with other isolation solutions. I theorize the Ginko acts as a suspension for a mass loaded tt thereby increasing low level noise. The Scout and Scoutmaster are designed for a stable, non-moving isolation platform. Why would you give a mass loaded design a suspension, it is not meant to have a suspension. Look at my virtual system to see my solution, much better than the Ginko.
