Interesting.
Keep in mind that the OM bodies are all virtually identical. There may be extra refinements with the Super-OM series over regular OM but the main difference between an OM-5E, OM-10, OM-20 and OM-40 is the different iterations of the stylus each uses. In other words, don't pay for an OM-30 if you're planning to sub out for the Digitrac 200 NE stylus. Hunt down an OM-5E instead.
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Upon further digging, it appears that the originator of this mod "Quest" says that the Digitracs were made by Ortofon and that the 200 NE (Nude Eliptical) would be the same as an OM-20.
http://www.audiokarma.org/forums/showth ... p?t=192907 If one already has an OM-5E or OM-10, I would say that this would be neat and inexpensive mod for sure.