Superlux HD-681 Evo cable fix

This is a mod for the Superlux HD-681 Evo that helps you fix the issue these headphones experience after a short while (the cable plug for the replaceable jacks gets easily worn out and cuts at the top part of the rubber cover).

Install it by slicing the part vertically and use superglue to stick it between the two leftover broken rubber pieces and the lower part of the chrome cap.

For an example, check the attached picture.