The Steinberg UR22 MK ll is not a MIDI SOUND MODULE, you will never get it to make any sound or hear anything in headphones unless you ROUTE some AUDIO signals into it.

all it does is route MIDI DATA (which is NOT SOUND) from outside the PC to inside the PC and vice versa.

you need route the AUDIO from your Ketron to the INPUTS of the UR22 at a minimum

Since I'm unfamiliar with this interface and it's virtual audio mixer (if any) you will have to read instructions on how to get DAW audio into it and back to PC, or out to speakers, or...


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