How do I change the key of the audio source?
Based on the owner's manual for the JBL BandBox Solo, there is no direct physical button on the device to change the musical key…
Manuals+ Q&A
JBL Bandbox Solo Portable Practice Amp Owner’s Manual — questions & answers
Read product questions and troubleshooting answers linked to JBL Bandbox Solo Portable Practice Amp Owner’s Manual.