Boss TU-3S Compact Tuner

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. 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.

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