Phono Stage in inputs for 2 tonearms

Audio Research Reference 3SE or earlier. I highly recommend the brand. One of the components that has made them main stream high end… phono stages and preamps.

I don't know any,

one option is to use a SUT with multiple inputs, alternate MC gain/impedance, and PASS for MM.

Then go to a MM Phono stage or MM Input

My SUT, Fidelity Research FRT-4 has 3 inputs and PASS, 4 xfactors/loads. Entre 100 also has 3 inputs and PASS, 3 xfactors/loads.

more advanced units have independent adjustments for gain and impedance.

Musical Fidelity M6X Vinyl. MM or MC. 
 

3 inputs 

Balanced or single ended outputs

Discrete not opamp.