The BOSS TU-3W provides solid tuning equivalent to the industry-stand TU-3 with its own redesigned circuitry with selectable buffered or true-bypass operation and the most transparent audio pass-through possible.

BOSS TU-3W Features:

• The world’s leading stompbox tuner, enhanced with Waza innovation and craftsmanship
• Superior tuning and premium signal buffer in one pedal
• Tuning functions are identical to the industry-standard TU-3
• Refined audio circuitry for exceptionally pure signal pass-through
• Buffer can be turned off for true-bypass operation
• BOSS five-year warranty

BOSS TU-3W Specifications:

• Tuning Range: CO (16.35 Hz)--C8 (4,186 Hz)
• Reference Pitch: A4 = 436--445 Hz (1 Hz step)
• Tuning Accuracy: +/- 1 cent
• Modes:
  • Chromatic
  • Chromatic flat x2
  • Guitar
  • Guitar flat x2
  • Bass
  • Bass flat x3
• Display Mode:
  • Cent mode
  • Stream mode
• Power Supply:
  • Alkaline battery (9V, 6LR61) or Carbon-zinc battery (9V, 6F22)
  • AC adapter (sold separately)
• Bypass: Buffered bypass or True bypass
• Controls:
  • Pedal switch
  • OUTPUT switch (BUF/THRU SW)
  • MODE button
  • STREAM/CENT button
• Nominal Input Level: -20 dBu
• Input Impedance: 1 M ohm
• Nominal Output Level: -20 dBu
• Output Impedance: 1 k ohm
• Recommended Load Impedance: 10 k ohms or greater
• Indicator: CHECK indicator (Serves also as battery check indicator)
• Connectors
  • INPUT jack
  • OUTPUT jack
  • DC IN jack
  • DC OUT jack
• Current Draw
  • 60 mA (DC 9 V)
  • 110 mA (DC 9 V, when High Brightness mode is on)
• Expected battery life under continuous use (These figures will vary depending on the actual conditions of use.)
  • Alkaline: Approx. 6 hours
  • Carbon: Approx. 0.5 hours
• Accessories
  • Owner's Manual
  • Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information")
  • Alkaline battery (9V, 6LR61)
• Options (sold separately)
  • AC adapter: PSA series
  • Parallel DC cord: PCS-20A (DC Plug x 8)
• Size and Weight
  • Dimensions (WxDxH): 2-7/8" x 5-1/8" x 2-3/8" (73 x 129 x 59 mm)
  • Weight (including battery): 1 lb 1 oz. (460 g)