Cartridge Loading- Low output M/C

Almarg 5-22-2018
I see that the Koru provides two selections for input capacitance, namely 100 pf and 570 pf. You are likely to find that the 100 pf setting will allow you to use lighter loading (i.e., higher resistance values) than the 570 pf setting.... [And quoting Lyra cartridge designer Jonathan Carr]:  "Less capacitance allows the resistive load on the cartridge to be reduced [i.e., the number of ohms to be increased], which will benefit dynamic range, resolution and transient impact."

Almarg 5-22-2018
The point, generally speaking, is that minimizing the capacitive load seen by an LOMC cartridge is likely to result in optimal resistive loading being lighter than the resistive load that would be optimal if the capacitive load is higher. And in turn the lighter resistive load is likely to be sonically beneficial.

Almarg 5-23-2018
With regard to the OP’s situation, all I was basically saying is that he is likely to obtain better results using the 100 pf setting of his phono stage rather than the 570 pf setting, assuming that he optimizes the resistive loading that is used with the 100 pf setting by listening.