Benz Micro Ruby 2 Impedance Adjustment

Everyone that I have discussed this with seems to prefer about 22k ohm loading on that cartridge. This is also the load that is factory set in the Benz-Lukaschek phono stage that is made for that cartridge.

I'd suggest trying that load first, and maybe making some minor adjustments from there, if needed.

My preamp has plug-in resistor slots to change the load. The Benz US distributor recommended 900 to me. I bought some cheap resistors, tried the full range, and settled on 1000 (if I remember correctly). When I found one I liked, I bought a good Vishay resistor in that value. It might be my preamp or taste, but I preferred the 1000 range to 22k. Try different options and see which you prefer. There is a huge range of sounds between 500 and 47k.

For what its worth I went with the Groove phonostage which is factory preset and after discussion with the Groove people their experience for this set up was much lower, around 100 as I believe. I will look it up again and get back to you but the sound is fabulous. If you can easily switch things test it out yourself. I would avoid the very high loading 47 k.