The TU-2 Chromatic Tuner Pedal from Boss uses the same technology as other TU-series tuners but is housed in a simple, sturdy stomp box pedal. This compact pedal has a mute/bypass with a single stomp and is easy-to-see with its 11-point LED indicators and 7 segment LED display. The TU-2 has seven tuning modes with adjustable reference pitch from 438-445Hz and 8 octave range.
| Pitch Calibration Range | C0 (16.35Hz) to C8 (4186Hz) |
| Reference | A4 = 438 to 445Hz (1Hz step) |
| Accuracy | ±3cent |
| Connectors | Input, Output, Bypass, DC In |
| Hard Disk Space | DC 9 V Dry Battery, AC Adaptor (PSA-Series: Optional) |
| Dimensions (WxDxH) | 2.9 x 5.12 x 2.4" (73 x 129 x 59mm) |
| Weight | 15 oz (0.4kg) |