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"Chicago Mk1 - Limited Edition (only 30 made - SN 16/30).
Deep Lounge sinewaves, classic House bass, through to dirty Techno riffs. The Chicago Boutique RIFF & BASS Analogue Synthesizer is designed with basic or limited features, yet a useful sound portfolio, made possible by the 5 OSCs (four variable phase and width pulse oscillators, in addition to the Sub), Square and Saw oscillators, all shaped by a wide bandwidth 4 pole Sallen & Key low-pass analogue filter.
The Limited Edition Chicago Boutique Monophonic RIFF & BASS Analogue Synthesizer began with a new approach to the filter and oscillator design, resulting in sounds that work perfectly 'in the mix', with deep solid lows and rich percussive highs (when you need it). Pulse nuance controls allows you to get the sound just right through very subtle harmonic variations. It is not for nothing called Chicago Bass as it does that classic sound very well indeed.
Specifications:
5 Oscillators:
4 x independent Pulse waves with variable phase (automatic or manual) and pulse-width control.
1 x Square or Saw and Sub oscillator - all with accurate stable tuning (at any temperature). The Saw oscillator circuit uses discrete components for a perfect and pure Saw waveform.
Analogue signal path from the oscillators to the output.
6 Chanel mixer with 2 x pulse inverting controls.
Voltage/digital controlled ADSR amplifier.
Sallen & Key 24dB/Octave Low pass filter with variable Q control.
Voltage/digital controlled APDS filter envelope with selectable decay character. (Attack, Peak, Decay and Sustain).
'Drop to Sine' filter switch.
Control: MIDI IN and MIDI THRU (5-pin DIN). MIDI Channel selection 1 to 16.
Tune (positive) to 60 cents, Major 3rd, Perfect 4th or Perfect 5th.
Keyboard mode - filter trigger on every note or no filter trigger on overlapped notes (emulates classic analogue mono-synths).
1 Watt power consumption.
9 VDC Supply (power supply not included). Any polarity. Connector Size 2.1mm x 5.5 mm barrel plug. Typical model for universal use: Farnell/Element 14 Part Number: 2524429
19" (483 mm) x 3U (132 mm) x 40 mm depth.
Metal construction.
6 mm mono audio out jack.
Made in the UK.
Manual: [
pdf link]
Please note that the power supply is not included."
"A true powerhouse of audio warfare, Grind puts the "damage" in Audio Damage. From subtle tube-style saturation to full-on mangled wavetable distortion, Grind is a Swiss Army Knife of sound design. This effect consists of three main blocks: wavetable lookup, in to algorithmic saturation/distortion/, and finally to a multi-mode filter with eleven different topologies, from your favorite four-pole lowpass ladder filter, to the 18dB screaming acid, to more subtle toolbox filters like notch. Driving it all is a tempo-synced LFO for rhythmic filtering and grinding. 
"Chicago Mk1 - Limited Edition (only 30 made - SN 16/30).
Deep Lounge sinewaves, classic House bass, through to dirty Techno riffs. The Chicago Boutique RIFF & BASS Analogue Synthesizer is designed with basic or limited features, yet a useful sound portfolio, made possible by the 5 OSCs (four variable phase and width pulse oscillators, in addition to the Sub), Square and Saw oscillators, all shaped by a wide bandwidth 4 pole Sallen & Key low-pass analogue filter. 
