The reference pitch in the TU-8 can be adjusted from 338Hz-445Hz. Here’s how:
1. Press the Pitch button – the pitch indicator begins flashing.
2. While the indicator is *still* flashing, press the PITCH button repeatedly until the desired reference pitch is selected.
3. After you’ve selected the pitch, the indicator will stop flashing and the new setting is stored.
Note: When the power is turned off, the pitch returns to 440Hz.