Loosely based on the Distortion plus and the DOD 250 grey box, the YellowJacket is a must-have. The yellow side has germanium diodes, which give you the warmer sound. the red side has silicon, which give you more crunch. When both sides are activated, the red side's volume control will act as a master volume, so you can increase the yellow side's gain even further, by cranking the volume as well.
Used - very good condition. Includes original box.