Zoom FS01 Momentary External Foot Switch analog and a mute footswitch provides

and a mute footswitch provides a way to silently tune on stage or change instruments without any popping or noise in the PA

or cymbals

accommodates most stringed instruments safely and securely

The U-22 is also equipped with a mini stereo input so you can record an iPhone/iPad

Short one-piece boom arm with 3/8" thread

Zoom FS01 Momentary External Foot Switch analog and a mute footswitch providesThe FS01 is a momentary foot switch for Zoom guitar and bass effects devices that allows you to bypass effects, turn the tuner on or off, enable the delay hold function, and mute the delay input, as well as providing tap tempo input for rhythms, the looper, and various effects parameters. The FS01 can also be used with the LiveTrak L 12, L 20 or R8 to start and stop playback, punch in and out manually, and change effect patches.