Melos MA220 tube phono stage

Well I finally got the Melos MA220 coupled with a Music Hall MM7 running the original Goldring Eroica H MC Cartridge. I have to say it can sound quite nice at times! I still trying to figure the unit out. Not sure why it has 2 sets of outputs. One person said to run to 2 preamps. I guess its input is for only a High Output MC since it appears to work and there is no switch for Low Output cartridges. I have to gain it down quite a bit with my preamp gain adjustment to avoid clipping. I have not figured out what effect if any the load switching that steps from 47k Ohm to 1 Ohm does. So far I'm happy with it but would like to know more what this unit does.

The Load Input adjustment markings, which has independent knobs for Left and Right are marked 47k 23k 1k 510 390 270 180 91 47 22 10 and last 5 (not 1)ohms. It does have 2 outputs which are the same and I did test these to 2 line stage inputs of my preamp. It came with the cone spike feet which are in use! I read I should look into upgrading to "superior coupling capacitors" which I may look into since the unit is quit old. I'm also very interested in trying out the GOLDRING EROICA L MOVING COIL MC LOW OUTPUT CARTRIDGE as my Turn table came with the Goldring Eroica-H High Output Moving Coil Cartridge. I think I should be able to do this without the addition of a cartridge preamp before my phono stage preamp.