Yeah,

Some years ago I believe Everlast unified their amptrol devices to 25K.

My 2014/2015 210EXT had an OEM 47/50K pot on the pedal, but now they're all 25K, I'm pretty sure. But, my 201EXT still works brilliantly with a CK Worldwide SteadyGrip amptrol device that has a 25K pot, probably because the 210EXT is a digital unit.

Anyway, your older 200DX (or 200DV) would undoubtedly work fine with a NOVA or SSC pedal that has a 22 or 25K pot.

Mark, the Everlast rep will probably respond to this thread soon and have the more concise answer on this point.