BOSS TU-3W Waza Craft Chromatic Tuner Pedal — True Bypass Stompbox

The BOSS TU-3W Waza Craft Chromatic Tuner elevates the legendary TU series platform with selectable buffered/true bypass operation and refined circuitry for the most transparent signal pass-through of any BOSS stompbox tuner. Accurate to ±1 cent and built in Japan, it delivers the gold-standard tuning performance professional players demand — now with Waza Craft-grade engineering throughout.

For players comparing the best true bypass tuner pedal for live performance, the TU-3W stands apart by offering both modes in a single unit. Its enhanced buffer circuitry drives an entire pedalboard with strong, clean signal conditioning, while a rear-panel switch instantly disables the buffer for compatibility with wah, fuzz, and other impedance-sensitive effects. This flexibility makes the TU-3W the definitive professional chromatic tuner pedal for serious gigging musicians and tone purists alike.

The TU-3W supports Guitar and Bass modes for string-by-string tuning across 7-string guitars and 5- and 6-string basses, plus flat tuning options that handle down-tuning up to six semitones below standard pitch. The DC output jack enables pedalboard power distribution when paired with a PSA-series adaptor and PCS-20A parallel cable (sold separately), streamlining any professional rig. Backed by BOSS's five-year warranty and decades of industry-standard TU series heritage, the TU-3W represents the pinnacle of BOSS tuner design and craftsmanship.

Key Features of the BOSS TU-3W Waza Craft Tuner

• Selectable Buffered/True Bypass: Delivers maximum flexibility for any pedalboard configuration — engage the refined Waza buffer for pure signal conditioning or switch to true bypass for complete transparency when the tuner is off.
• ±1 Cent Tuning Accuracy: Ensures pitch-perfect intonation across guitar and bass, with Accu-Pitch Sign function providing an unmistakable visual confirmation the moment tuning is complete.
• 21-Segment LED Display with High Brightness Mode: Provides clear, readable pitch indication in any environment, including bright outdoor stages where standard displays wash out.
• Silent Stage Tuning: Output mutes automatically when the tuner is engaged, eliminating noise between songs and during mid-set adjustments without disrupting the audience experience.
• Extended Instrument Support: Guitar and Bass modes cover standard tuning, 7-string guitars, and 5- and 6-string basses, with flat tuning down to six semitones below standard in Guitar mode.
• Bypass Output Jack: Functions as an unmuted parallel output and signal splitter, enabling creative routing options and drop-in pedalboard integration.
• Pedalboard Power Distribution: DC output jack supports daisy-chain power delivery to other pedals via PSA-series adaptor and PCS-20A cable (sold separately), reducing cable clutter across the board.
• Made in Japan with BOSS Five-Year Warranty: Waza Craft construction standards and BOSS's industry-leading warranty back every unit for long-term professional reliability.

Technical Specifications

• Tuning Range: C0 (16.35 Hz) – C8 (4,186 Hz)
• Reference Pitch: A4 = 436–445 Hz (1 Hz steps)
• Tuning Accuracy: ±1 cent
• Tuning Modes: Chromatic, Chromatic Flat ×2, Guitar, Guitar Flat ×2, Bass, Bass Flat ×3
• Display Modes: Cent mode, Stream mode
• Bypass Type: Selectable — Buffered Bypass or True Bypass
• Nominal Input Level: -20 dBu
• Input Impedance: 1 MΩ
• Nominal Output Level: -20 dBu
• Output Impedance: 1 kΩ
• Recommended Load Impedance: 10 kΩ or greater
• Connectors: Input (1/4" phone), Output (1/4" phone), Bypass (1/4" phone), DC In, DC Out
• Power Supply: 9V alkaline battery (included) or AC adaptor (PSA series, sold separately)
• Current Draw: 50 mA (standard); 110 mA (High Brightness mode)
• Battery Life (Alkaline, continuous use): Approx. 5.5 hours
• Width: 2-7/8 inches (73 mm)
• Depth: 5-1/8 inches (129 mm)
• Height: 2-3/8 inches (59 mm)
• Weight (with battery): 1 lb 1 oz (460 g)
• Country of Origin: Japan
• Warranty: BOSS Five-Year Limited

What's Included

• BOSS TU-3W Chromatic Tuner Pedal
• 9V Alkaline Battery
• Owner's Documentation (Safety Information and Important Notes leaflet)