I owned the Extremas for eight years, between 1992 and 2000 (I should never have sold them!).
In late 1991, thirty years ago, in one of the Stereophile issues, there was a picture of Franco Serblin with the Extremas perched on a Sonus Faber dedicated Extrema wooden speaker stand (which looked gorgeous). In 1992 in Italy (where I bought my Extremas), I asked about this wooden stand, and I was told that this was a prototype which was never put into production. Likely the 40 kg weight (each) of the Extremas militated against a wooden stand.
I initially used my Extremas on the Target R2 4 post metal stand (which did not look great, since the speaker looked much bigger than the stand), and then upgraded to the Sonus Faber 6 post metal stand (probably OEM, but I don't know who made these for Sonus Faber), which weighed (each) 60 kg! So 40 + 60 kg = 100 for each speaker!
I used Blu-Tak between the speaker and the stand.
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