Or rather, it works but the sound is really, really low (I can barely hear it if i turn everything else off). Doesn't matter what midi channel i set for thru. However, it did work load and clear when i sent the thru channel to my old JV1080. When i switch back to the S750 it's low again. The S750 works fine for all other channels and all midi channels work fine if i play them from Cubase.