playing synth on jamkazam

[blandis]

That is weird... Not sure why a USB MIDI signal is producing a audio sound in JK. I saw your other post about the audio of that synth, and that you cannot hear it in Channel 2. Is it possible that you are actually using the synth for both at the same time, that is, as a midi controller driving a VSTi synth plug-in, AND as an audio source into Channel 2? To check, simply unplug the synth's output from channel 2 of your interface and see if the sine wave sound goes away. If it does, you have solved both problems: the synth's audio DOES work on channel 2, and you know how to use your synth to drive the VSTi. Hope this helps