Potentiometer Basics This entry was posted on July 21, 2016, in Amplifier maintenance, Guitar maintenance, Guitar repair, Information & Instruction, Restorations and tagged Alpha, amplifier care, amplifier diy, amplifiers, blackface, electric guitar, electronics, guitars, historical amplifiers, Potentiometer, tube amplifier, vintage amplifiers, wiring. Bookmark the permalink. I have recently been asked a lot of questions regarding the mighty potentiometer and its function in guitars and amplifiers. So, here is a brief and hopefully informative clip explaining what goes on inside these devices. Enjoy! Share this:TwitterFacebookLike this:Like Loading...