Source Audio Soundblox 2 OFD Guitar microModeler - Manual (Page 11)

Controls: Buttons | 11
TONE SHAPE
There are three selectable EQ shapes: TREBLE, MID, and BASS. This
control works in conjunction with the TONE knob. Press the TONE SHAPE
button to scroll through the three tone control options. The TONE knob
will adjust the level of cut or boost for the selected frequency range. The
three tone shapes can be set independently and will not affect each other.
If you need to quickly set all of the three bands back to the default flat
setting (the 12 o’clock knob position), simply press and hold the TONE
SHAPE button for 2 seconds. The TREBLE, MID, and BASS LEDs will
rapidly blink three times, indicating that they have been reset.
FACTORY RESET
Should you wish to perform a factory reset, unplug the power supply from
the pedal, then press and hold the TONE SHAPE button while plugging
the power supply back in. Continue holding the TONE SHAPE button until
the 1 and 2 preset LEDs blink in succession — this will erase any saved
presets.
TONE
SHAPE
TREBLE
MID
BASS
(HOLD)
FLAT
Press button to
select option