No Rolfw, the superjack's quite a one off - not a 2100 clone design or any clone.. this one's the one with the dial at the back that you can set to the correct position including offset, I think it's got auto focus too - stand in front of it and it will try to get past you to get a signal- that helps with backlash- (or maybe that is the auto backlash).
Just doing a couple of mal Fortec(Turner) Motek 2100 clones now that have those adjusters on the front. They look the same outwardly but I don't think they are made as good as Motecks....