Tonearm for Technics SP-15


I have a Technics SP-15 turntable with a Grace 707 arm and a Grace F9E cartridge with a Soundsmith new stylus.  This combination sounds great but is limiting.  The 707  tonearm has a fixed headshell and it does not allow me to easily swap other MM  high compliance catridges or match compliance requirments MC cartridges.  Suggestions welcome from those more expert than I.  

arneama22

I own a B500 with the EPA250 arm wand and a 501H.  Unfortunately the base is so "fat" that it really will not fit any of my turntables except my TT101. But I have an FR64S mounted on the TT101 specifically for low compliance LOMCs.  I'd have to machine a new tonearm board for the B500.  (I use a solid aluminum armboard that is further braced from below by fastening to an even larger piece of alu.) But the B500 is an esthetically beautiful piece of precision engineering the likes of which would cost a fortune in today's money.

My idea was to mount EPA-100 mkII on Victor TT-101 sooner or later

Just to be clear, by "fat" I meant to suggest that it is wide in diameter at the base which requires a much larger than average hole in the tonearm mount board.  Also, my personal bias would be to hard wire the IC to the base, thereby eliminating a pair of RCA jacks in the signal path.  JP, have you ever done such a mod?