Dear Bornie: The Acoustic Solid is the same TT that the two Acoustic Signature Analog One MK2 that I own.
This is the only non-oil bearing that I know and this bearing design is really a great one that works excellent.
The TT has, too, an external and excellent power supply that generates its own electrical signal, so the external TT motor is free of any electrical contamination/fluctuations.
You can accomadate up to three tonearms and up to three motors ( I prefer only one ) and you have to use ( add-on ) a good antivibrational footers instead the own TT footers that are really bad.
The speed accuracy and speed stability is world class and these and the all metal massive design make that this TT has a great performance and could compete with the best out there.
It works fine, I never had any operational troubles/problems with it: bullet proof design.
www.acoustic-signature.com
Highly recomended.
Regards and enjoy the music.
Raul.