TU-3s Chromatic Tuner

Name: TU-3s Chromatic Tuner
Brand: Boss
Availability: OnlineOnly

Tuner

Compact TU-3 tuner variant without buffer output. Pure true bypass, smaller footprint.

The TU-3S is a bypass-only version of the TU-3, designed for always-on signal path installation without a footswitch. It sits in the signal chain providing buffered pass-through and can tune silently via a separate mute switch or when connected to a separate output.

Same tuning engine as the TU-3: chromatic tuning with 21-segment LED display and high-brightness mode. The key difference is the lack of a footswitch. The TU-3S is designed to be mounted where it's always visible but never needs to be stomped.

Compact format without footswitch. Buffered bypass maintains signal integrity. Power output can daisy-chain other pedals. At modest current draw, it's an efficient always-on buffer and tuner.

For players who mount their tuner where they can see it (on a mic stand, amp top, or rack) rather than on the pedalboard floor. The TU-3S provides always-on buffering and tuning display without taking up footswitch real estate.

Demo Videos

Specifications

Power9V DC

Current Draw95mA

Polaritycenter-negative

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Boss

TU-3s Chromatic Tuner

Tuner

Compact TU-3 tuner variant without buffer output. Pure true bypass, smaller footprint.

Compact format without footswitch. Buffered bypass maintains signal integrity. Power output can daisy-chain other pedals. At modest current draw, it's an efficient always-on buffer and tuner.