CUBE-80X: Using the TUNER.
The CUBE-80X features an on-board tuner that let's you quickly and easily tune your guitar. Here's how to use the Tuner:
1. Press the TUNER button.
2. Turn the TYPE switch to select the string that you want
3. Play a single note repeatedly on the open string that you want to tune.
4. If the left-side red LED lights up, the string is flat. If the right-side LED lights up, the string is sharp. Tune the string until the green LED lights up.
5. Repeat Steps 2-4 for the remaining strings.
6. Press the TUNER button when you're finished.