BOSS TU-3S Chromatic Tuner
Tuner Pedal
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WORLD-STANDARD PERFORMANCE IN A TINY FOOTPRINT
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
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Respected TU-3 tuning performance in a more compact size
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21-segment LED meter with brightness control
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High Brightness mode enhances meter visibility outdoors
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Accu-Pitch Sign function provides visual verification when tuning is complete
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Chromatic and Guitar/Bass modes, with support for 7-string guitars and 6-string basses
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Guitar Flat mode supports “drop” tunings up to six semitones below standard pitch
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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
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BOSS five-year warranty
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:
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Chromatic
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Chromatic flat x2
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Guitar
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Guitar flat x2
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Bass
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Bass flat x3
Display mode: Cent mode
Stream mode: Power Supply, AC adaptor (sold separately)
Bypass: Buffered bypass
Controls:
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MODE button
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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:
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INPUT jack: 1/4-inch phone type
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OUTPUT jack: 1/4-inch phone type
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DC IN jack
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DC OUT jack
Current Draw: 30 mA (DC 9 V), 85 mA (DC 9 V, when High Brightness mode is on)
Accessories:
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Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information")
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Parallel DC cord (DC Plug x2)
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Rubber foot
Options (sold separately):
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AC adaptor: PSA series
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Parallel DC cord: PCS-20A(DC Plug x8)
Dimensions
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
* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.
For more information, click here to visit the manufacturers website.

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