GAIN: No knob on the Geiger Counter
Pro is more magical than GAIN. Not
only does it control the overall amount
of distortion, it functions in tandem
with the selected WAVETABLE to cre-
ate a nearly infinite variety of timbres.
TONE: Here we have the same flexi-
ble tone control as the classic Geiger
Counter, which allows you to shape the
wet signal’s equalization. The tone cir-
cuit can be bypassed with the ON but-
ton, so the decision to tame or release
the GCP’s wildness is yours.
MIX: The GCP features a newly de-
signed MIX circuit that gives you the
ability to blend your dry signal back in
to the pedal’s output. When DRY mode
is on, MIX blends between wet and
dry; when DRY is off, the knob mixes
between the analog gain circuit and the
digitally processed signal.
ACTIVATE: The GCP uses a quiet elec-
tronic bypass relay that completely
circumvents the circuit to maintain the
fidelity of your dry tone.
CV 1 AND 2: One of the most promi-
nent features of the GCP is its dual CV/
EXP (control voltage and expression)
matrix. Here you can route the two
CV/EXP jacks to control GAIN, TONE,
SAMPLES, BITS, BANK, TABLE, MIX,
or FILTER. Now you can animate your
sonic universe with expression pedals
or your modular synth setup!
WAVETABLE: This section controls the shaping func-
tion for each preset. BANK selects one of the 32
banks, while TABLE select one of the 16 wavetables
in each bank. The first 256 wavetables are from
the classic Geiger Counter, while the remaining 256
tables (signified by a dot on the screen) are newly
designed for the GCP. MORPH activates 16 steps of
blending between tables.
PRESETS: The Geiger Pro features 16 fully program-
mable presets, the ability to make RANDOM patches,
and a MANUAL override function. Capturing your patch
is as easy as pressing SAVE, using the footswitches to
find the right preset, and pressing SAVE again. Every
parameter on the GCP can be saved into memory, ex-
cept MASTER volume. Dedicated preset footswitches
make recalling tones easy.
FILTER: We love distortion, but some-
times it can get too hairy, even for us.
So we gave the GCP an anti-aliasing
low-pass FILTER that rolls off high
frequencies. The circuit has a subtle
resonance that gives its sweep an ex-
tremely musical character. Better yet,
sweeping the FILTER with one of the
CV/EXP inputs creates otherworldly
wah and synth tones.
LEVEL: Controls the volume of the cur-
rent preset.
MASTER: Overall output volume, re-
gardless of preset.
SAMPLES: This knob controls the
sample rate of the GCP’s processor.
Higher sample rates yield crystal
clear tones or subtle robotic har-
monics, while lower settings produce
pseudo ring modulation and pure dig-
ital noise. The FINE button limits the
range of the SAMPLES control for eas-
ier fine-tuning.
BITS: The BITS control sets the bit
depth of the processed signal, and
also activates the GCP’s noise gate
modes. We have increased the bit
depth of the Geiger processor from 8
to 12 bits, allowing for a higher fidelity
output. Reducing BITS creates square
wave distortion tones. Increasing
BITS to GATE engages a digital noise
gate mode with adjustable threshold.
When in PRE WT mode, bit reduction
and gating occurs before WAVETABLE
processing. MASK mode is a logical
AND function of raw numbers dis-
abling voltage possibilities.
GEIGER COUNTER PRO
WAVESHAPING DISTORTION WORKSTATION
