dynavector 20x or grado sonata

how is the out put are the 20hx shielded i to have a grado sonata not sure if i will like the dynavector 20hx have you herd the 10x5 thanks

thanks guys i have a mcintosh c41 pre amp not sure if it will have the gain to run a high output coil i now have acoustic feed back at the 1 oclock with the grado so i dont no what to do any more

thanks that what iam wondering if iam going to run out of headroom this table is much more noisey than my old one there are so many factors in changeing my cartige i lost head room with this rm5 project it is even on a graint shelf i could go to the 3oclok on the knob with my old table