Tuner Mode (REACTOR 50W/100W) – Help Center

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REACTOR includes a built-in tuner with LED display. The tuner mutes the output while active, making it ideal for silent tuning on stage or during practice.

Note: The tuner uses a fixed reference pitch of A = 440 Hz. This cannot be changed.

Enter Tuner Mode

Hold the BANK SWITCH/TUNER button to enter tuner mode.

Reading the Tuner

While in tuner mode, the 4 preset LEDs will display if the string being played is in tune:

The output of REACTOR will be muted while tuner mode is on — perfect for silent tuning on stage.

Exit Tuner Mode

Press the BANK SWITCH/TUNER button again to exit tuner mode and resume normal operation.