QUARTER INCH JACK INSULATORS

A pair of nylon insulating washers that isolate a quarter-inch jack from a metal enclosure, for when the jack must not share the box's ground.

About this part

The set includes two nylon washers for any quarter-inch jack. One has an inside ridge that keeps the jack from touching the metal enclosure. One washer goes on the outside of the enclosure and the other on the inside. Use them wherever the jack needs to be free from the enclosure's ground plane, such as:

• Ground isolation for output jacks after transformer isolation
• A control output to an expression pedal
• An output to a footswitch control (such as "Tails" on an echo or reverb stompbox)
• Connecting another box with more circuitry (such as a diode clipper switch box)

Specs

• Set of 2 nylon washers
• Requires a 1/2 inch mounting hole (a standard quarter-inch jack uses a 3/8 inch hole)