GT-PRO: Selecting the Main Out Level (+4 /-10dBu)
Use the following steps to select the Main Output Level in the GT-Pro;
1. Press SYSTEM.
2. Press PARAMETER right to select Main Out Lev.
3. Turn the VALUE dial to select the desired setting -10dBu /+4 dBu.
4. Press EXIT when you're finished. The new setting is saved automatically.