FR64s & Orsonic Av-1s Effective mass ?

As I implied in one of my responses to Raul, I think the coupling of the tonearm (any tonearm, but maybe especially undamped tonearms) to high mass is another form of dampening.  So, you're on the right track, IMO.

Yes, I was thinking about on what You wrote about the B-60, offloading the vibration energy. An interresting theory. By the way I do not have the B-60, but the arm is drilled directly in the Debut plint.

The fr64 is an excellent arm. Raul has some strange opinions some times. I think he loves distortions😱

lewm "As I implied in one of my responses to Raul, I think the coupling of the tonearm (any tonearm, but maybe especially undamped tonearms) to high mass is another form of dampening."

I agree absolutely. When I had the FR-64S, it was on an Oracle Delphi Mk3 with a special metal armboard that sounded way better than the factory-standard acrylic board. That combo, on the FR adjustable VTA base, was just incredible. As I mentioned earlier in this thread, I sold the whole package to a friend who still uses it. And it still sounds great. The various Orsonic headshells were also a major improvement, and helped match the arm to the cartridge.

Dear @analogluvr :  Audio world must lives with distortions and yes I love distortions as you too but difference is what kind of distortions makes less harm to the MUSIC and to what is recorded in the LP grooves.

I'm sure that you love diferent kind of distortions than me as many of other audiophiles. That's the main subject.

Regards and enjoy the music,
R.