With a background in vibration control in some of Bavaria's finest automobile manufacturers, no engineer is more informed nor more skilled at keeping vibration from our delicate musical signal than Carsten Tragsdorf. That his designs are also elegant (made to fit your exact needs) come in a variety of possible finishes and whose open design allows for ease of access, they are truly alone in the audiophile vista.
They are also quite mass intensive. The larger rack for instance, is north of 400kg. Yours truly has had the joy of standing atop many of Carsten's designs with nary a waver.