VPI tone arm question.

Good question Mr. M. I had the same question. Looking forward to an answer. I own a tricked-out Classic 2.5 (basic Classic plinth, with Classic 3 uni-pivot tonearm and base). I suspect that the pluses and minuses between the 2 arms offset each other.

Some cartridges perform better with gimbaled bearings over unipivots and vise versa.

Brf ... how is one to know the difference?

No simple answer other than to research the cartridge in question. Cartridges perform best when mated with a suitable tonearm whether it be effective mass or bearing design. Some high compliance cartridges perform best in robust arms with fixed bearings.

At first I was reluctant to get a Classic One because the uni-pivot made me nervous. After setting it up with a Lyra Delos I wasn't all that impressed until I started adjusting that big 'ole azimuth ring. After I got the azimuth set right I was amazed at how every thing snapped into focus.

I use the screw down clamp on all my Lp's and the arm is rock solid, no rocking back and forth, tracking is excellent.

To answer Bifwynnes question, check the cartridge manufacturers specs. Not all specify what type of arm to use but Lyra at least recommends a high quality uni-pivot or linear arm.