Gain Control
This controls the pre-amp gain of the amplifier.
Bass Control
This controls the bass response of the amplifier.
Middle Control
This controls the midrange response of the amplifier.
Treble Control
This controls the treble response of the amplifier.
HF Drive
The HF Drive control does two things. It filters the high frequencies when turned anti clockwise, but
also boosts the presence of the output stage when turned clockwise into the white area. This boost
will be much more apparent at high volume levels.
Volume Control
The volume control adjusts the output volume. This control can be completely defeated via a
latching footswitch. High levels of volume will heavily overdrive the output stage.