The D’Addario Circuit Breaker line features a coaxial, oxygen-free copper conductor with two layers of impenetrable noise-rejecting shielding formulated in a low capacitance design. The lower cable capacitance allows all your instrument’s brilliance, presence and character to be transmitted with the utmost transparency while the double shielding rejects outside interference that can degrade your tone. The Circuit Breaker plug includes an actuated “kill switch” allowing noise-free live instrument changes even at blaring concert volume. Press and hold the switch to mute the signal to the amplifier to avoid damaging pops and squeals while hot swapping instruments. Releasing the switch reactivates the signal flow. Additionally, this premium instrument cable’s plug features a solderless connection for exceptional strain relief and effortless length modifications and repairs.