Useless and frustrating. I own the previous version of the cable with cut-off switch and was hoping PW has improved it's design so you can't accidentally press the button on the jack. Not only have they not improved it, they made it a lot worse. Now the slightest touch passes the signal when it's depressed so there is no way to connect the cable to a guitar without it passing some signal and making a sharp noise in the amp. Which is exactly the opposite from what this cable is supposed to do. Buy Neutrik