I have the Magnepan arm which I have not yet mounted/used. I got it as a "throw-in" on a TT I bought last year. So, I'm not at all an expert but here's what I have found out:
The mounting distance is 224.1 mm vs 222 for the Rega. There's a mounting template available to get it set up right though.
The Magnepan mounting template, manual and a brochure are available on Vinyl Engine. Here's the URL for them: http://www.vinylengine.com/library_model.php?make=Magnepan&selected_model=Unitrac%201
There's a fair amount of discussion of this arm on Vinyl Asylum - search on "Unitrac". At least one of the inmates is somewhat of a guru on the arm.
The mounting distance is 224.1 mm vs 222 for the Rega. There's a mounting template available to get it set up right though.
The Magnepan mounting template, manual and a brochure are available on Vinyl Engine. Here's the URL for them: http://www.vinylengine.com/library_model.php?make=Magnepan&selected_model=Unitrac%201
There's a fair amount of discussion of this arm on Vinyl Asylum - search on "Unitrac". At least one of the inmates is somewhat of a guru on the arm.