This is a sound effector which change to Wah sound when tap the internal vacuum tube. The vacuum tubes are known to generate the microphonic noise due to external shocks, and it is a problem how to suppress this noise in products that use vacuum tubes. With the phenomenon, the TapTube applies effect to sound by tapping a tube.
Tight with a belt
When you use the TapTube, tighten with supplied belt to the guitar or bass . You can change to the effector the sound by tapping from pick or finger. The TapTube doesn't do anything until it's tapped. This is new kind of effecter that picks up vibrations and applies effects.