OTO Machines’ BISCUIT is new 8-bit effect processing hardware from a boutique design firm in Paris. The essential effect is all 8-bit: using 8-bit converters and processing, you can add crunchy, digital waveshaping, delay, pitch shift, and step filter effects. But because those processes produce distortion and aliasing, BISCUIT combines its 8-bit effects with an analog resonant filter. (It’s switchable, so if you want to retain all the artifacts, you can – but you also have a filter at the ready.)

The whole design is a lovely exercise in reducing a set of sound capabilities to their most essential elements. The appearance of the front panel, though, is deceptively simple. Multifunctional uses, all provided within the eight buttons at bottom and the parameter controls at top, allow effects from filtering and basic bit reduction to wild, radical bit destruction, step-sequenced filtering, delay, and even a little synthesis.

The BISCUIT is also fully MIDI-enabled: every control sends MIDI, and every function receives MIDI CC. Critical to its step-sequenced and delay functions, BISCUIT receives MIDI clock, as well, or you can use tap tempo.

Finally, quality and local production figure prominently in the OTO: the company advertises that they don’t outsource production and work entirely with local companies in France.

Price: EUR529 including VAT (so 442,30 if you’re outside Europe). Available now:

That’s pricey, I know, but it also packs as much sonic power as a collection of several Moog effects – and likewise might be the only effects box you need.

And, oh yeah – the future of BISCUIT may provide more than it does now.

I got to look more closely at the BISCUIT (think “bis-QWEE” as in French), at least on paper. I’ve also had the chance to talk to one of the creators about the evolution of this box, which reveals something of the process of hardware creation in general.

First, let’s take a closer look at the hardware.

Inside the Hardware

Onboard controls include:

  • Drive: Input gain, up to +15 dB (which can clip your sound prior to conversion)
  • Naked: dry signal
  • Dressed: 8-bit (wet) signal
  • Filter controls: set to green (low-pass), yellow (band-pass), or orange (hi-pass), then adjust cutoff (20-15kHz) and Q
  • Brain: changes the function of the rectangular switches at the bottom, between selecting parameters and muting/inverting the 8-bit signal
  • Clock: 250-30kHz sample clock frequency
  • Bypass: a true relay bypass
  • Switches 1-8: mute or invert your 8-bits, select effects and parameters, and recall presets/snapshots

The main issue is that it’s using the 8 rectangular switches along the bottom of the unit that most directly shapes the sound, by allowing you to set each bit independently – literally, the eight bits of the signal itself. Switch off “Brain” mode, and you can directly manipulate the bits of the signal, then mix that signal with your dry source.

The presets portion can incorporate all of your own presets, with 16 slots and SysEx dump functions for storage and recall on your computer. (Hmmm, may be time to dig up an editor/librarian tool, or make a new, simpler one.)

Unbalanced 1/4″ inputs (2x mono L+R)
Unbalanced 1/4″ outputs (2x mono L+R)
MIDI in, MIDI out
9V AC adapter

Form factor:
Metal case
1.27 lb (580g)
7.48″ x 2.36″ x 4.60″ (190mm x 60mm x 117mm)

Interview with the Founder/Creator

I talked to Denis Cazajeux, creator of BISCUIT, about his work.

It took time to design this device. I started by building stompboxes in my kitchen under the name Cazatronics (http://www.myspace.com/cazatronics). I built some MIDI controllers, SID and FM Midibox synths (I lover [MIDIBox creator] Ucapps !), analog reverb stompboxes…

Few years ago, I built a box in a plastic butterdish, to simulate the sound of an old Fairlight CMI, but without have to sample through this machine.

The idea was simple: use an 8-bit AD converter with a parrallel output, and connect these 8 outputs to an 8-bit parrallel input DA converter. The sampling frequency was controlled by a special pot. You could pass sounds from a modern hardware or sofware sampler through this box to get an old-school 8-bit sampler sound.

I discovered that I could get some very harsh and radical digital distortion by simply mute (always 0) or invert (a 0 becomes a 1 and the opposite) one or several of the 8 lines between AD and DA converters. The initial box was then upgraded with 8 toggle switches, each with 3 positions (on, mute and invert).

As the sound can become very strong and aggressive, I added a 12db/octave low-pass filter with a Q control.

I forget a little bit this box in my kitchen for some years. One day, I met an engineer/producer in a vintage studio near Paris, where I worked as a sound engineer and maintenance tech. We shared the same passion for music, electronics, lo-fi, 8-bits,… (Thanks for your blog, we really love CDM and have a look on it few times a week!).

He loved the 8-bit box and we started the idea to sell this thing, as there were no other things like that on the market (except Frostwave Sonic Alienator). It took me 2 years to set the company, find the money, improve the initial design (MIDI, stereo, FX, multimode filter, pads instead of toggle switches,…), find subcontractors…

I wanted a strong box, with soft switches similar to a monome, customs knobs…

There’s more than 350 components inside BISCUIT, most of them are SMD (Surface Mount Devices) to keep the product small and not too much expensive. This is small and local economy: all parts (electronics boards, metalwork, pad and knobs design, packaging…) are made in french factories (most of them are in Normandy). Each Biscuit is assembled by our hands and tested by our ears in our workshop.

Input gain (Drive pot), little mixer (Naked and Dressed pots) and filter are analog, but with digital control (using Maxim digital pots IC’s), so you can memorize some presets and have a MIDI control.
I choose to use hi-quality parts (Panasonic low signal relay for bypass, Polypro Caps for filter, Neutrik jacks, linear -8v/+8v power supply…).

Digital processing (waveshapers, delay, pitch, bit manipulations) is pure 8-bits, using a simple Microchip PIC microcontroller. Delay and pitchshifter use the internal PIC RAM (3kB !).

The PIC microcontroller can upgrade its firmware, using a MIDI SysEx utility (SysEx Librarian for MAC users or MIDI OX for PCs).

All firmware upgrades are for free, as a simple SysEx file to download from our website.

In case it wasn’t evident from the gorgeous design of the case and associated graphics, yes, there was a significant design collaboration behind all of this, says Denis:

We worked with graphic artists H5 (http://www.h5.fr/).

They design the:

OTO and BISCUIT logo,
Knob design,
Silkscreen drawing,
User Manual layout.

They work in advertisment for companies such as Dior, Yves St Laurent, Audi…but also for music (record cover and videoclip) : Air, Royksopp (“Remind Me” videoclip), Massive Attack, Goldfrapp, Etienne de Crécy, Alex Gopher,…

They did a very nice job for us so I wanted to talk about them!

Producer/engineer Stéphane Alf Briat is the partner with Denis, and the man who prompted actually releasing BISCUIT as a product.

Let us know if you have further questions for Denis. This is far more information than I usually do for a product preview, but it’s fantastic, of course, to be provided with this much detail. It looks like a fascinating design, and I can think of a couple of friends I expect will want one. More coming soon.