This is a bit of a diversion, but I was thrilled to discover that the review of the AT-ART20 referenced on Audio Technica's website was done on a Holbo Mk2 air-bearing system. I have a new Holbo waiting for me to get home and install it. When I do, I will take my AT MM cartridge out of the SME arm and put it in the Holbo. Then my old Shure V15 with a new Jico stylus can go back where it belongs in the SME tonearm, with a Garrard 301 table.
I intend to write up my experiences with the Holbo and its tangential tracking tonearm in the next few weeks. I can say that the delivery from Slovenia to Australia was absolutely painless and much faster than I anticipated. It just appeared, no customs issues at all.
The tangential tonearm, which floats on a 10-micron thickness of low-pressure air, eliminates both Horizontal Tracking Angle errors and the need for any anti-skating device.

