A cartridge that mates well with the Sutherland Loco phono preamp?

I would think the question would be the sound of the arm / cartridge/ turntable. The function of the phono stage is to pass on as exactly as possible the sound it receives. As I upgraded my Phono stage a dozen times ($200 —-> $17,000) over the last fifty years… the Phono stage simply brought the sound from the turntable more naturally with a lower noise floor. I recommend focusing on the table, tone arm and cartridge to craft the sound you want. if the phono stage gets in the way, then look at upgrading it. 
 

Ok. They seem to advertise cartridge output independence and gain adjustability to not care about the cartridge. But it does sound like an unusual design.