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

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Features

• 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

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Specifications

• Tuning Range: C0 (16.35 Hz)–C8 (4,186 Hz)
• Reference Pitch: A4 = 436-445 Hz (1 Hz step)
• Tuning Accuracy: ±1 cent
• 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
• Power Supply: AC Adaptor (sold separately)
• Current Draw:
  
  • 35 mA (DC 9 V)
  • 95 mA (DC 9 V, when High Brightness mode is on)
• Dimensions:
  
  • 73 (W) x 84 (D) x 56 (H) mm
  • 2-7/8 (W) x 3-5/16 (D) x 2-1/4 (H) inches
• Weight: 220 g; 8 oz
• Accessories: Owner’s Manual, Leaflet (“USING THE UNIT SAFELY,” “IMPORTANT NOTE,” and “Information”), Parallel DC cord, Rubber foot
• Options:
  
  • AC adaptor: PSA series
  • Parallel DC cord: PCS-20A