D'Addario Circuit Breaker Momentary Mute cables feature an integrated mute switch that prevents loud pops or squeals when unplugging your instrument. Simply press and hold the button to activate the mute function, and unplug. When you're plugged in and ready to go, release the button to reactivate sound. 1 Angled and 1 straight jack plug. Cable. Available in 10 & 20 Feet length.