An electronic guitar tuner is a device that helps you tune your guitar by converting the sound of your guitar strings into an electrical signal. This signal can then be displayed on a screen so you can see what note each string is supposed to be tuned to.
You have a tuner you can plug your guitar into (electric guitar, or electro-acoustic guitar) and tuners you can place on your headstock so it picks up the sound from string vibration and translates that into a digital signal.
You can even tune your guitar online by playing a note and using a microphone to pick up the sound and show you if you are too high or too low and should adjust.
I'm Joost Nusselder, the founder of Neaera and a content marketer, dad, and love trying out new equipment with guitar at the heart of my passion, and together with my team, I've been creating in-depth blog articles since 2020 to help loyal readers with recording and guitar tips.