Boss TU-3S Chromatic Tuner

General specs

• Reference Pitch: A4 = 436 to 445Hz (1Hz step)
• Tuning Range: C0 (16.35 Hz) to C8 (4186.00 Hz)
• Tuning Accuracy: +/-1 cent
• Switches: Stream/Cent, Mode
• Modes: Chromatic, Chromatic Flat x2, Guitar, Guitar Flat x2, Bass, Bass Flat x3
• Connectors: Input jack, Output jack, DC In jack, DC out jack
• Optional Accessories: Parallel DC Cord PCS-20A

Technical specs

• Nominal Input Level: -20 dBu
• Input Impedance: 1 MOhm
• Nominal Output Level: -20 dBu
• Output Impedance: 1 KOhm
• Recommended Load Impedance: 10 KOhms or greater
• Power Supply: 9V Battery or optional AC adaptor PSA Series
• Current Draw:
• 35 mA (DC 9 V)
• 95 mA (DC 9 V, when High Brightness mode is on)
• Dimensions (WxDxH): 73 x 184 x 56 mm / 2 7/8 x 3 5!/16 x 2 1/4 inch
• Weight: 220 g / 8 oz