Besides the usual Gain, Tone and Level knobs, the Diablo has some more interesting controls:
FEED affects the amount of bass in the input signal. You know the problem:
an overdrive sound gets muddy rapidly if the input signal is too bass heavy
(that’s why the treble booster was invented).
With the FEED control you can make even the fattest neck humbucker sound clear
and transparent or beef up weak pickups a little.
The BODY control takes effect on mids and compression.
Another important feature is the HEADROOM SWITCH.
Set to the “HI” position, an internal electronic voltage doubler is activated –
the Diablo runs on close to 18 Volts from a regular 9 V battery or power supply.
The higher voltage gives more dynamic range, more headroom and
tighter bass – just try it!
For complete specifications and description of all the controls
please check the user manual.