I deal directly with Peter at Symposium for orders and advice. Roller blocks for turntables will not work under my VPI due to slight lateral movement. I use Symposium roller blocks under my CD transport.
I just got reply from Peter who said that he would recommend roller block junior with g10 tungsten bearing over stacked coupler for my micro seiki. I guess if your vpi has out board motor, it may have more problem with lateral movement but vpi classic or micro seiki, with on board motor, I don't expect problems with lateral movement except may be the first few seconds after turning the motor on
Hmmm... I just tried Rollerblock junior with Tungsten G10 ball. Quite interesting. In comparison to spikes, I lost a bit of the impact and slam on the bass but the sound is more evenly from top to bottom, smoother, richer in the midrange. I may have lost a touch of sparkle on top as well. The spikes that I used are aluminum, locally made, look kind of like Avalon spike.
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