Boss TU-3S Chromatic Tuner Stompbox Chromatic Tuner

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Key Info

Boss TU-3S Chromatic Tuner is a Stompbox Chromatic Tuner that features 21-segment LED meter with brightness control

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

Highlights

  • 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
  • BOSS five-year warranty

Technical Specifications

Tuning Range
  • C0 (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
  • AC adaptor (sold separately)
Current Draw
  • 35 mA (DC 9 V)
  • 95 mA (DC 9 V, when High Brightness mode is on)
Bypass
  • Buffered bypass
Controls
  • 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 (Power on indicator)
Connectors
  • INPUT jack
  • OUTPUT jack
  • DC IN jack
  • DC OUT jack
Accessories
  • Owner's Manual
  • Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information")
  • Parallel DC code (DC Plug x2)
  • Rubber foot
Options (sold separately)
  • AC adaptor: PSA series
  • Parallel DC cord: PCS-20A (DC Plug x8)
Size and Weight
  • Width
  • 73 mm
  • 2-7/8 inches
  • Depth
  • 84 mm
  • 3-5/16 inches
  • Height
  • 56 mm
  • 2-1/4 inches
  • Weight (including battery)
  • 220 g
  • 8 oz
SKU:
TU-3S
Model Name:
TU-3S Chromatic Tuner
Brand:
Boss

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