Some low output guitars take some extra steps to make sure that your taking full advantage of the Jamstack's volume capabilities. This tutorial should help you get a great result.
First please make sure that:
1) The volume is all the way up on your guitar
2) The volume on your phone is all the way up (make sure the phone mount is not hitting the volume button)
3) The volume on the amp is all the way up
4) The volume of the pedal preset is all the way up
Then please watch the video below to boost your volume!