Boss TU-3 Chromatic Tuner Pedal

The TU-3 is the tuner you'll find on more pedalboards than any other, and there's a reason for that. It's dead accurate, built like a tank, and the high-brightness LED meter is readable even on the brightest outdoor stages. Flat tuning support, multiple tuning modes for guitar and bass, and a smooth 21-segment display make tuning fast and precise between songs.

Beyond tuning, the TU-3 doubles as a signal router with a bypass output that keeps your signal flowing to your amp while you tune silently. The buffered output also helps maintain signal integrity across long pedalboard chains. It runs on a standard 9V supply and can even power other pedals via its DC output. If you need one tuner that just works every single time, the TU-3 is the industry standard for a reason.