Reply To: uTrack 24 for Playback ….. What are the correct connections ?

As far as I can see on a picture of the Studiolive mixer, the combined XLR/jack input is the microphone/line input.
The microphone input uses the XLR connection, the line input the TRS connection. Since the output of the uTrack 24 is at line level, you should use the line input of the mixer, so you should use a SubD25 to TRS cable.
Maybe you can reduce the input sensitivity of the microphone input enough to obtain a correct match, but this is not the way it should be done.
(And don’t even THINK about switching +48V phantom power to the output of the uTrack24…)