If you are operating on batteries only and there is not enough battery power, the sound coming from the speakers on this instrument tends to distort. Use the included AC adaptor, or replace the batteries with fully charged batteries.
- If the sound from this instrument’s speakers seems to distort even when using fully-charged batteries, the batteries themselves may be degrading.
- Replace the batteries with new ones (rechargeable Ni-MH batteries). If you are playing for a long time, remove the mouthpiece from time to time and wipe off any moisture.