Source Audio Soundblox 2 OFD Bass microModeler - Manual (Page 10)

10 | Controls: Buttons
CONTROLS: BUTTONS
NOISE GATE
This control allows for quick adjustments to the noise gate threshold.
Since distortion effects can have very high signal gain, the background
noise and hum are also gained up and can become undesirably loud.
Enabling the noise gate on the SB2 OFD Bass will help silence the back-
ground noise when the bass is not being played. There are 4 levels for the
noise gate threshold: OFF (all LEDs off), LOW, MED, HIGH. Low being the
lowest threshold and least aggressive gate action, HIGH being the highest
threshold with the most gating action.
Note: this button is also used to select and control the function of an
external controller through the MULTI-FUNCTION input. See the External
Control section.
LOW
(EXP)
MED
(MIDI)
HIGH
(HH)
NOISE
GATE
Press button to
select option