Bone-Head quad nand delay synth.

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YouTube Published on May 20, 2012 by TheZombiest

"A 4093 quad-nand synth with added PT2399 delay effect built in.
Also with added line-in to hook up external sources to the delay module."


via this auction

"A lovely macabre square-wave nosie maker based around a 4093 quad nand gate CMOS chip.
Capable of hideously beautiful beepy noise.

The 4 oscillators interact with each other to create a relentless range of synth tones.

The power starve dial adds further modulation and manipulation of the oscillations.

Added to this bleeper is a digital delay circuit, built from a PT2399.
The controls are for delay time and looping feedback.
It's lo-fi, filthy and full of gritty digital artifacts when longer delay times are used.

The skull fits well into the palm and can be enjoyed by anyone with a passion for harsh, grinding noise terrorism.
It's powered by a single 9v battery which is housed in a holder on the back of the skull head.
There's a 6.35mm jack socket for hooking up to your amp/mixer/effects.
There's also a line-in socket too so you can dirty & delay your other instruments.
There's no internal speaker!

The hollow of the skull is illuminated by a flickering red candle-effect LED."