Gain Knob: controls
the amount of gain in
the circuit. To achiev
the original PDF-1
gain set to minimum.
Freq Knob:
allows you to set
the frequency
that you want
to boost or cut.
Ranges from
35Hz to 6Khz.
On / Off: turns
the pedal on
and off.
Clean Dirty:
switches the
distortion circuit
in or out for clean
boost or distort-
ed boost.
5 position Band-
width: sets the Q
of the boost or cut.
From thin (needle
point) to fat (stand-
ard pedal response).
Height Knob:
controls how much
cut or boost by + / -
20dB. At 12 o’clock
its at unity gain.
The latest incarnation of our very rst design, the
parametric distortion lter – otherwise known as the PDF-2
- is the infamous sibling of our very own PDF-1.
The PDF-2 has more gain on tap than it’s popular
predecessor, an added expression pedal input and dual
channel operation, the PDF-2 has garnered a fearsome
reputation as a versatile beast in its own right.
With a reduced noise oor, adjustable gain knob and dual
footswitch for clean and dirty channels, the PDF-2 delivers
unmatched versatility, having been used on instruments
including piano, bass, drums, synths, and both electric and
acoustic guitars, it also boasts an expression pedal input
control* feature for wah, phaser and manual tonal shifts.
Offering an effective EQ and a bombproof enclosure, this
drive pedal is considered to be one of the most formidable
on the market for even the hardest touring musician.
* Features compatible with the Stone Deaf EP-1 Expression
Pedal only.
• Parametric EQ with adjustable distortion gain
• Frequency response from 35Hz-6kHz. (For Bass & Guitar)
• Adjustable Gain allowing you to increase or deacrease the
gain. (For PDF-1 gain you need to roll back the gain knob
to about 7 or 8 o’clock to achieve this.
• Lower noise oor than the PDF-1 (as per customer request)
(Quieter than PDF-1)
• Frequency sweep control via expression pedal: Wah Wah
function via expression using boost in thin setting, Phaser
function via expression using cut in thin setting, Tone con-
trol function via expression using medium to fat bandwidth
setting.
• 9v Power supply centre negative 2.1mm Boss Style (use
isolated power supply to reduce noise) Current Draw is
35mA
• Footswitchable Dual Channel, Clean and Dirty parametric
EQ channel
• Hand Built in Manchester, United Kingdom
Please note if you are trying to match volume to other pedals
you need to experiment with the bandwidth Q, Height (Boost
/ Cut) and Frequency as this all works in conjunction with the
pedals overall volume. There is an overall volume compensation
circuit built into the height function of the pedal.
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