I get a better result with my XV-1s and DV507MKII after changing to a lighter headshell (Yamamoto wood).
I've heard the XV-1s doing well in VPI 10.5i and Graham Phantom as well, but in different systems so I will not compare.
I've heard the XV-1s doing well in VPI 10.5i and Graham Phantom as well, but in different systems so I will not compare.