How good is the Obsidian plinth of Technics SP10 ?


Recently I heard an SP10 MK2 playing music at a friend's place. It was mounted on the stock Obsidian plinth. It actually sounded very good. I wonder how good is the Obsidian plinth compared to:

1. Typical after market birch ply plinths ?

2. Custom designed plinth like the Panzerholz plinths made by Albert Porter ?

Any ideas ?
pani
Had the MK3 with the Obsidian base and it was excellent and matched the SP10 well. Limitation was the length and no. of arms. I never liked the table in the wooden plinths that were available at the time in the Far East.

You should ask Albert about his Panzerholz, unfortunately I never heard it.

david
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.