[NeoVXR]

one thing is for sure.
there are different types of pickups, and they need to be plugged each in a particular preamp that gives them a load WITHIN SPECS. also signal voltage is for most types SO VERY low, that you can get a nice S/N ratio only with a specialized preamp.
for professional purpose, there are delicate laser sensor systems, that draw a digital map of the vinyl surface, and then compute the sound that underlies the curves. so they can care for dust and scratched surfaces also.