Ortofon SPU Synergy

Wonderful catridge. I use it in my analog rig: Merrill-Scillia MS2 TT, Ortofon RS-212D arm, custom-built phono stage, Consonance Cyber 300B PSE monos, and Lamhorn speakers. As compared with the Ortofon Jubilee (another great cartridge), the SPU Synergy has more weight & solidity but does not have the air of the Jubilee. But it is a good match for the lighter sound of the Cyber/Lamhorn combo.
Now the Ortofon Windfeld is another league altogether. Absolutely the best cartridge I have used!

How much tracking force do you use? Do you use a step up transformer?

The Synergy is my favourite cartridge at the moment, even before my Kiseki Goldspot, Shelter 501 and Koetsu Rosewood. I think the SPU (also my SPU classic GME) are more able to grip you and make you forget about hifi, than a lot of other cartridges (e.g. most of the Benz, I had).

I was just looking at it...I use SPU GE and SPU Reference Gold. Both super cartridges! How does it compare to the GE?

I use the recommended 3gr tracking force.
I don't use a step up transformer. My phono stage has enough gain.