iRig HDX volume switching between GarageBand and ChartBuilder apps

I initially go to the garage band app. My iris is plugged in. When I remove the mono I get full volume. I then switch to ChartBuilder and I have no volume. It sounds like it switches off when going from one app to the other. Can anyone help me solve this problem?

[Re-Titled by Moderator]

Original Title: full volume on garageband and when i switch to chartbuilder app i have no volume. i have an iRig HDX plugged in. can anyone help with this problem?