[ohohyodafarted]

Where are the purity magnets??

Does anyone see a purity magnet assembly around the front of the 12AX ?

Can't tell from the photos.

EDIT: OK Forget it. Looking at the schematic, I see a "field neutralizing coil" supplied from a couple of 100 ohm pots from the power supply. Must be something like was done on the 15GP22 sets.

I think I like the Permanent magnet ring as used on the 21CT55, CTC4 and CTC5 and other manufactures sets, because it gives you 6 to 8 quadrants of variable adjustment. You can fine tune purity quite well with the magnets.

All in all a very cool set. I am specially fond of sets with a separate powers supply chassis.