Yep, I've had the pleasure of making the acquaintance of a few Plitrons myself, both PP (5 ohms nominal) and SE (4 and 8 ohms). That's how I knew about the multiple secondaries; the huge bundle of blue wires emerging from the potting epoxy that keeps the contents "top secret." I peel off the little silver "Designed by Vanderveen" stickers from the bottom and stick them on my toolbox for "victory marks," LOL!IMO, they're just about the best iron mankind has ever made. I have some Tamuras that are certainly quite detailed, coherent, and refined, but the Plitrons do eat their lunch, IMHO.
Thermionic