A lil' buddy TU3!
This Boss TU3S Chromatic Tuner is just too cute to pass up. It’s designed in mind for guitarists that have something with a tuner out, such as a wireless or an ES8. Or better yet, for use on the home desktop!

Pedal board crowded? Guitar out of tune? Problem solved! The Boss TU-3S Chromatic Tuner is just like the highly popular Boss TU3, only compact and always on and ready to go.

Boss TU3S Compact Chromatic Tuner

• Respected TU-3 tuning performance in a more compact size
• 21-segment LED meter with brightness control
• High Brightness mode enhances meter visibility outdoors
• Accu-Pitch Sign function provides visual verification when tuning is complete
• Chromatic and Guitar/Bass modes, with support for 7-string guitars and 6-string basses
• Guitar Flat mode supports “drop” tunings up to six semitones below standard pitch
• Powered by optional PSA-series adapter; DC Out jack for powering up to seven BOSS compact effect pedals via an optional PCS-20A daisy-chain cable
• BOSS five-year warranty

World-Standard Performance In A Tiny Footprint

The BOSS TU-3 is the world’s go-to stompbox tuner, trusted by players everywhere for its reliable operation and bulletproof durability. Scaled down in size, the TU-3S gives you the same industry-standard performance in a tiny footprint that saves precious pedalboard space. The display and tuning functions are identical to the TU-3—the only thing eliminated is the pedal switch. Always on and ready to go, the TU-3S is perfect for use with pedal switching systems like the BOSS ES-8 and ES-5, and ideal for any setup where space is at a premium