George L's .155 Amp Jumper Cable for Marshall 1974x AmpsGreat amp jumper cable for the Marshall 1974x. It's 5. 5" long using George L's . 155 brass plugs and George L's high end . 155 black cable. This cable is measured perfectly to jump from the second input on the Tremolo channel to the first input on the standard channel. It will work on other amps as well. We can also custom make a cable to fit to your exact specs. We can make the cable in white, blue, red, purple or orange. Just message us and we'll