Function f(x) first came to my attention in early 2015 with the
Clusterfuzz—a modern, original design, with six controls and
the capability to recreate fifty years’ worth of fuzz tones. As if
the Clusterfuzz wasn’t cool enough, Function f(x) fully blew my
mind with the Third Rail—a dual overdrive consisting of two
NPN transistor-powered circuits, each with independent clipping
options. By allowing players to choose between Schottky diodes,
a silicon diode, or no diodes, the Third Rail is capable of a wide
range of overdrive tones; everything from heavy and compressed
to open, dynamic, and barely broken up. The tones alone are worth
the price of admission, but as I noted in my October 2015 review
of the Third Rail, it’s the switching options that make it a game
changer. The first mode allows either side to be turned off and
on with its respective switch. The second option allows for the
left switch to bypass the pedal will the right switch “flip-flops”
between the channels. The pedal takes its name from the Third
Rail Mode, where both channels are active (stacked, if you will) and
the left switch bypasses the pedal entirely while the right switch
allows for stuttering, momentary bypass.
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