External audio

Hi,

I use the Digitone also as a sound FX unit, by pluging external synths on the Digi’s inputs.

The problem is, even if i configured the volume on the master page to let’s say, 100, sometimes i’ll hear no audio until i manually move the volume knob down or up. It’s on 100, no audio, then i move to 101 and back to 100, and the audio input works.

How to fix / avoid this issue ?

Thanks