Load setting for van den Hul Grasshopper II

My pre-amp has four settings for the moving coil.
47,000 ohm, 300 ohm, 100 ohm, user select.
Anyone with experience?

Thanks I know you can help.
Perhaps you can find some info on Van den Hul's website, at http://www.vandenhul.com/artpap/phono_faq.htm.
Go to the vdH website www.vandenhul.com and look up the specs for your Grasshopper. I think 800 is the recommended optimum, so 300 should be OK