Wanting your guitar rig to sound and feel identical – wired or wireless? Our patent-pending Smart Guitar Cable houses sophisticated, miniaturized circuitry within the 1/4-inch plug that varies the actual capacitance that the guitar’s pickup is loaded with – just like a cable. Sound Devices’ A20-TX Smart Guitar Cable is a 36-inch guitar cable available with a straight or right-angled 1/4-inch plug that delivers incredible sound without losing the tone of a wired guitar connection.