Hi, Same here. I use one directly into the mm inputs. Seems odd, but works fine. I also use a Dynavector 10X5 that way. Excellent. The cartridges were designed to work that way. I experimented with lower impedance loading on both and went back to the 47K as it seemed to give the best overall performance.
Custom Dual 701/Origin Live/AT-33PTG/II
Sota/Origin Live/Grado Reference Platinum I
All valve custom electronics
Martin Logan Vistas with Subs