D'Addario Circuit Breaker instrument cables feature a "kill switch" that cuts the signal to the instrument for quick switching. Simply press once to cut it off and again to reactivate it. The Circuit Breaker series uses ultra-pure, copper-free conductors for low capacitance and pure tone. It has solder-free connectors that ensure a solid connection and are easy to repair live with pliers and a screwdriver. It has two protective layers that cover 100% ensuring superior insulation and noise rejection. This is the perfect high performance cable.