Granite surface plate

Surprise some of u don't like granite platform . As I understd it HRS used granite for their platform as well except they added the " rubberised footers " . So the question is not whether granite is good . It's the implementation of the platform . Likewise there are a lot of opinions about merit of acrylic & glass platform & some manufacturers do used them eg Grand Prix Monaco , Mana rack etc

Audio blazer, don't forget that HRS uses a 0.75" granite platform set in a aluminum shell and sitting on a polymer bed and supported by load specific feet. The surface plate being discussed is 4 times the mass of the HRS.

Granite is useful for isolation, but IMHO, granite needs to be damped to prevent ringing etc.

It will ring like a bell and give you a bright treble balance .Try Symposium its neutral and will give better stage ,bass,midrange etc.

Bpoletti,
I would suggest that you call Adona. I am sure that they would sell you one of their granite shelves. They are the best of both worlds. They bond granite to a layer of MDF with a special (proprietary?) polymer. Anyway, it eliminates problems with ringing etc. Visit the Adona website. I have been using one of their racks for abourt 4 years and like it very much.

I use 3 x granite block samples as feet
for my
turntable. (They are about 4" x 4" x
1.5")
I decouple the plinth from the blocks
with
brass compression rings on their side.
See
my system pics. This way there is no
granite ringing but there is excellent
focus over butcher block.