With the TU-3W Chromatic Tuner, Boss offers a stompbox tuner from the Waza Craft series, which aims to provide high-quality tone and touch response by using analog components in the circuit design. Boss designed the tuner to deliver industry-standard tuning with +/-1 cent tuning accuracy and a transparent signal transfer.
The TU-3W features selectable buffered or true-bypass operation. The signal buffer decreases tone-sucking, essential when using long instrument cables or gargantuan pedal setups, while true-bypass mode enables your signal to pass through the pedal without an added electrical footprint.
With the TU-3W's DC output, you can daisy chain pedals for power to help minimize your rig's number of wall warts. The tuner takes up the same amount of real estate as most standard Boss pedals and runs on a 9V battery (included), or a power supply (available separately).
Key Features
Technical Specifications
Tuning Range
C0 (16.35 Hz) - C8 (4.18 kHz)
Reference Pitch
A4 = 436-445 Hz (1 Hz steps)
Tuning Accuracy
+/-1 cent
Modes
Chromatic
Chromatic flat x 2
Guitar
Guitar flat x 2
Bass
Bass flat x 3
Display Mode
Cent
Stream
Bypass
Buffered bypass or true bypass
Controls
Pedal switch
Output switch (buffer/thru)
Mode button
Stream/cent button
Nominal Input Level
-20 dBu
Input Impedance
1 MOhm
Nominal Output Level
-20 dBu
Ouput Impedance
1 kOhm
Recommended Load Impedance
≥10 kOhms
Indicators
Tuning check (serves also as battery check)
Jacks
Input
Output
DC in
DC out
Current Draw
60 mA (9 VDC)
110 mA (9 VDC, when in High Brightness mode)
Battery Life (approx.)
Alkaline: 6 hours
Carbon: 0.5 hours
Power Options
1 x 9 V alkaline battery (6LR61) or 9 V carbon-zinc battery (6F22)
AC adaptor: PSA series (sold separately)
Parallel DC cord: PCS-20A (8 terminals) (sold separately)
Dimensions (W x D x H)
2.9 x 5.1 x 2.4" / 73 x 129 x 59 mm
Weight (with battery)
1 lb / 460 g