Best phono pre amp for Lyra Helikon

I too was at 47K, in conjunction with a BAT P10. But when I upgraded to more resolving speakers I found 47K too tizzy. 100R has a smoother, more delicate treble. It was easier for me to evaluate differences in loading as the overall quality of my system improved.

Dave

I went home to experiment with the loading on my Helikon which I had been using at 47K. My phono is currently set up for 100, 200, 1K, and 47K.

The 25 x output impedance suggests 137.5 ohms.

I tried 200 and there was a little more bass but the sound was uninvolving, no punch or energy. I tried 1K and that brought back the energy quite a bit. However, at that setting, it seemed that some records sounded great and others didn't. The ones that didn't had an almost "out of phase" kind of sound. The music didn't project out into the listening room the way I thought it should.

I think, the result will be different from phono stage to phono stage, but when I went down from 47k to lower values, the sound becomes more and more dull and the high frequeny information is going to be lost.
To the History from that, I think most cartridges were made for 47k, but not enough phono stages can handle that ( they offer an agressive sound ), most customers asked their dealer when they read the datas of the cartridge about the ability of their phonostage and didn't buy the cartridge. No deal.
Now we have specs : > 10 ohms and everyone is happy