Par3nl, mine does have a transformer-like box before the motor -- so I may have the DC motor. I also corresponded with Werner Ogliers(?) at Michell and he says the DC version lacks a lockring under the pulley. Mine doesn't seem to have one so that would fit. He also said he would speak to John Michell about developing a variable DC voltage supply to accommodate 33, 45, and 78 RPM speeds, which seems intriguing.
Thanks!
Thanks!