EMT STX 5/10 Step Up transformer


Has anyone ever heard, or even heard of this step up. I stumbled upon it, and didn't know they made step ups. I use a TSD 75, and an A23 Homage T2, but I can't help be curious about this EMT step up.
fjn04
I may have had one--I got an EMT step up transformer that was matched to my EMT JSD5 (6?) cartridge.  Tried to sell the cartridge and transformer together, but finally gave up and sold the transformer separately, everyone wanted it.  It was a great match for that cartridge..