How good is the Obsidian plinth of Technics SP10 ?

I've got an SP-10 MK II with the original obsidian plinth, dust cover, and EPA-100 tonearm. It is not yet set up. I'm toying with several options for an alternative plinth, but the answer may be as simple as keeping it stock except for filling the inside of the cast aluminum TT housing with epoxy mixed with brass powder. Some have stated that the obsidian base subtracts LF.

Pani, look at this thread for more plinth options:
http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1430138986&&&/SP10mk2:-OMA-Graphite-plinth-vs-Dobbins-

I think original plinth is "too bad" because you can't use "10,5 and "12 inch tonearms. Also it looks ugly compared to slate OMA plinth and others.

Chakster, I have been through your thread. Thanks for pointing out anyway.

I am not really a fan of 12" tonearms so it is not a priority for me. All I am trying to figure out is how good/bad is the Obsidian plinth compared to other good plinths made outside. If I decide to try a SP10, should I try to find one with an Obsidian base or just buy naked and find a plinth from one of the after market vendors ?

Hi Pani, I own the SL 1000,Mk2 . That is SP-10 mk2 with
Obsidian plinth. One should remove the original footers
which are worthless and substitute them for AT pneumatic
636 or the bigger one. Your last question looks to me more
relevant than the first. Those Obsidian plinth's are very
expensive so you should anyway buy the SP-10 Mk2 (or Mk 3)
naked. There are all kinds of plinths for the SP 10 with
ditto prices (see:ebay.uk).

In my direct experience, the factory Technics B3/B5/B7 Obsidian based plinths completely lack the inherent body, weight and tonal character required to allow the Technics Sp10Mk2 and Mk3 models to showcase their strengths. In my opinion, for these reasons, these complete Technics Sp10 models only received lukewarm industry press around the era of their introduction. Certain designers (ie. Artisan Fidelity, Porter, Dobbins) have invested years developing and improving Mk2 and Mk3 aftermarket plinths to maximize the potential of the platform, if it were as easy as coupling a factory Obsidian plinth to the drive, no one would have taken the time in the first place. If by chance you have the opportunity to personally hear a properly constructed hardwood/composite/Panzerholz constrained layer based plinth in comparison to the factory Obsidian plinth, you would literally be awe struck at the contrast.