Diabolical Devices
www.circuit-bent.com
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circuit-bent Casio SK-1
and Concertmate equilivent
The Casio SK-1 is one of the best circuit bendable instruments
available. The SK-1 and all the other Casio SK series sampling
keyboards are particularly well suited for circuit bending.
Diabolical Devices offers lots of different options on our
modified Casio SK instruments. We also sell custom made patch
panels and SK kits for your circuit bending project. Below are a
few examples of what these instruments can do.
New! Clock-Speed Oscillator Mod
Added oscillator controls clock-speed of Sk processor. This
allows you to Drastically control pitch, and slow all preset and
bent sounds down to nothing. When samples are recorded at lower
clock-speeds you can get really high and really low pitches by
toggling between internal and external clock oscillators. This
mod is paired with LFO stage. Listen the the samples below to
hear why.

Sample A- is an example of on-board sampling feature
corrupted by clock-speed mod and LFO
Sample B- is preset organ sound with same mod. The high
pitched pulses at the beginning is "audible data" mentioned
below.
Diabolical Devices Casio SK
modifications-
All Casio Sk series modifications come with
1/4" output

bending patch bay- 20 point patch-bay
for triggering an endless variety of sound
and effects.
constructed on high quality turret board
material- comes in Black, Blue or Red.
Connector choices
RCA-gold or silver
BANANA-black, white, red, orange, green,
blue, grey, yellow, purple, and brown
TURRETS- metal turrets connected with
alligator leads

pitch control- control master pitch or
keyboard in any of 3 ways
POTENTIOMETER- control pitch with standard
potentiometer.
BODY CONTACT- touch sensitive pitch control
PHOTO CONTROL- controls pitch with light, or
absence of.

hard-wired voicing and skew
switches
- toggle switches that control a
variety of glitch triggers and pulsating
synth sounds. These bends are selected to
work well in combination with each other and
with patched bends.

assignable switches- these are
switches with corresponding patch locations.
Connecting two bending location from
patch-bay through one of the switches will
provide a switchable link between the two
locations.

photo-theremin & multi-stage
oscillators
-
Up to four square-wave oscillators can be
added. The output of these oscillator stages
can be patched to bending locations for a
variety of controllable overtones, LFOs, and
bends triggered by generated waveforms.

AUX out/input and audible data-
This mod works well with multi-stage
oscillators because it can provide separate
outputs for oscillator stages. External
oscillators or audio sources can also be
bussed into patch-bay when used as input. In
addition audible digital data present at
bending locations can be monitored by
patching bending location to patch point of
corresponding AUX output.

LED patch-bay back light- Works on
everything but banana patch-bay, LEDs shine
through unused patch locations. LEDs come in
blue, red, green, yellow, or white.

MIDI input- Our technicians install SK
midi retro fit kits by Highly-Liquid.

Please contact us for current pricing and
availability. Custom design your own Diabolical
Device, modified to your specifications. We sell
lots of individually made instruments in our ebay
store. You can also save some money by sending
your own instrument to be modified. Don't forget
we also buy, sell, and trade working and
non-working musical/audio equipment of all kinds.