Boss TU-3w Waza Craft

From the TU-3 to the TU-3W: The Tuning Reference, Revisited in Waza Craft

The TU-3 established itself as a standard on pedalboards thanks to its precise tuning, robustness, and immediate readability in real conditions. With the TU-3W, BOSS applies the Waza Craft approach to an essential tool: maintaining the formidable efficiency of the TU-3 while refining the audio core. The goal is simple for a tuner: not to degrade your tone. The TU-3W offers a reworked signal path and, most importantly, a decisive choice depending on your rig: premium buffer to secure long cable runs, or true bypass for the most direct possible signal chain behavior.

Who Is the TU-3W For, and In What Contexts Does It Make a Difference?

The Boss TU-3W is aimed at all guitarists and bassists who want fast and reliable tuning without compromising signal quality. In live settings, it becomes a reflex: tuning between songs, pitch check before a solo, and muting the signal to switch instruments cleanly. In studio, it helps keep takes clean and consistent, especially with guitars in alternative or dropped tunings.

It suits both beginners (simple reading, immediate use) and demanding musicians who optimize every link in their chain. Blues, rock, pop, metal, worship, funk: whenever your pedalboard grows or you seek a stable signal and controlled intonation, the TU-3W's buffer or true bypass mode becomes a real fine-tuning tool.

Controls, Modes, and Design: A Tuner Pedal Designed as an Audio Link

The TU-3W features straightforward ergonomics: a footswitch to activate tuning/mute, a MODE knob to select the tuning type, and a STREAM/CENT selector to choose the display style. The "centered" display is perfect for hitting the exact pitch, while the "stream" mode offers smooth reading, very effective for quick corrections on stage.

The key point of this Waza edition is the OUTPUT selector (BUF/THRU SW). In buffered bypass, the pedal acts as a signal stabilizer: useful if you have several meters of cable, a loaded pedalboard, or effects sensitive to impedance. In true bypass, it lets your signal pass without buffering, handy if you already have a buffer elsewhere or prefer a 100% "direct" chain. It also includes a DC OUT jack to daisy-chain power to other pedals (depending on your power supply capacity and total consumption).

Sound

A tuner should not "color" the sound; it must respect it. The TU-3W is designed to offer the most transparent signal transfer possible, with an optimized audio circuit and a high-quality buffer when this mode is selected. The result: you retain the attack, dynamics, and tonal balance of your guitar or bass while gaining stability on complex pedalboards. In true bypass, the feel remains very direct, ideal if you like your guitar to respond without intermediaries. In both cases, the TU-3W acts as a trusted tool: you tune quickly, mute cleanly, and keep your chain under control.

Technical specifications

Color

Black

Tuning range	C0 (16.35 Hz) - C8 (4186 Hz)	Input impedance	1 M ohm
Reference pitch	A4 = 436 to 445 Hz (1 Hz steps)	Nominal output level	-20 dBu
Tuning accuracy	+/- 1 cent	Output impedance	1 k ohm
Display mode	Center mode	Recommended load impedance	10 k ohms or more
Bypass	Buffered bypass or True bypass	Input jack	6.35 mm jack
Controls	footswitch	OUTPUT jack	6.35 mm jack
Indicator	CHECK indicator (also serves as battery check indicator)	BYPASS jack	6.35 mm jack
Nominal input level	-20 dBu