The Pure Tone multi-contact output jack is the simplest upgrade you can make to a crackly, unreliable guitar or bass. A standard jack grips your cable at one point per terminal. Pure Tone's patented design uses dual tension grounds and dual positive tips, doubling the contact surface for a firmer hold and a cleaner, more stable signal with no crackle and no dropouts. Patented multi-contact design: two concave ground contacts and two positive tips 100% more contact surface than a standard 1/4" output jack Eliminates crackle, signal dropouts and loose-feeling sockets Mono, standard 1/4" fitting, direct replacement for most guitars and basses Classic nickel finish Part number PTT1 We fit Pure Tone jacks in our own workshop as our standard replacement jack and have never had one fail. If your guitar cuts out when the cable moves, this is the cure.