Load Settings Help: Luxman E-250 and Koetsu Black Line


Hi Folks, I could do with some help as I don't understand load impedance or capacitance settings.  

I have a Luxman E-250 for my phono stage which is connected to a Michell Gyro SE with a Tecnoarm 2 and a Koetsu Black gold line cartridge mounted on the arm.  This all feeds a C900u and a M10x. 

The settings on the E-250 are default but I feel there is more to be had with the sound based on some other similar setups i've heard.  Could I get some recommendations on load settings?   

sdavada