Using the Evidence Audio ESP Soldered Right Angle Plug is easy. First, make sure your cable is the right size - it works best with cables having an outer diameter of about 4 mm. Then, solder the cable to the plug following basic soldering procedures. When using it on a pedalboard, its right-angle design allows for a more compact setup. As for maintenance, keep it clean from dust and debris. Avoid using abrasive materials that could scratch the brass contact point. If you're not using it for a long time, store it in a dry place. And remember, don't force the plug into a socket that doesn't fit properly to prevent damage.