Boss TU-3S Chromatic Tuner

- Owner's Manual
- Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTE," and "Information")
- Parallel DC code (DC Plug x2)
- Rubber foot

- 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

- Weight: 0.290kg
- Height: 150mm
- Width: 92mm
- Depth: 65mm

- 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
- Options (sold separately): AC adaptor: PSA series, Parallel DC cord: PCS-20A (DC Plug x8)
- Width: 73 mm, 2-7/8 inches
- Depth: 84 mm, 3-5/16 inches
- Height: 56 mm, 2-1/4 inches
- Weight: 220 g, 8 oz