The EQ section contains a larger and more inclusive set of the EQ units found in the three original bass amps emulated by Bass Amp Designer.
EQ on/off switch: Turn the EQ (tone controls) on or off.
Bass, Mids, and Treble knobs: Adjust the frequency ranges of the EQ, similar to the tone knobs on a hardware amplifier.
Low switch: Switch between two positions that affect the tone and behavior of the Bass EQ knob.
1-2-3 switch: Switch between three positions that affect the tone and behavior of the Mids EQ knob.
High switch: Switch between two positions that affect the tone and behavior of the Treble EQ knob.