US-2x2 balanced outputs with iLoud Micro Monitors unbalanced inputs

[Max1993]

Hi everyone. I have US-2x2 with balanced TRS outputs and iLoud Micro Monitors with unbalanced RCA inputs. What cable should I use: just TS-RCA (where for US-2x2 side "-" and "ground" are one thing in fact) or TRS-RCA where on TRS side "ground" shouldn't connected/soldered with "-"? On RCA side should "ground" connected/soldered with "-"? Thanks.

 

[Max1993]

what scheme should I use:

or

 

[-mjk-]

The above diagram is correct.