Play Harmonica Quietly – Harp Mute
Can the Harp Wah help to practice at a lower volume?
“Quieting” or “muting“ the volume of the harmonica was not the purpose of the Harp Wah, but it has been reported by several players that it can reduce the overall volume when you close the cup off completely.
One player reported that he lives in an apartment and uses the Harp Wah to play quietly in the evening.
I’m not sure this “mute” device would give you much more control over volume than a good seal with your hands would.