System 90 Synthesizer

Analog / Digital Hybrid Modular Synthesizer

[No Longer In Production]



A perfect balance of digital depth and analog warmth, the System 90 Synthesizer creates a cutting edge playground for endless experimentation. The System 90 Synthesizer was designed around the complex power of the digital DNA Symbiotic Waves oscillator and the rich modulation options of the analog Waveforms oscillator. The analog/digital tag team creates an amazing sounding synthesizer with unmatched potential.

The System 90 Synthesizer is a complete, standalone, fully modular synthesizer that bridges the gap between classic east coast synthesis and west coast experimentation. The System 90 Synthesizer contains all the components necessary to create massive monosynth leads and basses, complex evolving soundscapes and textures, along with everything in between. Innovative oscillators matched with a stunning filter pushes the Synthesizer System 90 to a league of its own.

An unpatched System 90 Synthesizer offers a clean slate for sonic exploration and sound design. The open format of a modular synthesizer allows for greater control and a deeper understanding of synthesis. The System 90 Synthesizer is designed to function as a standalone instrument. However, the System 90 Synthesizer is a 100% eurorack compatible modular synthesizer. The system is made up of 11 individual eurorack format synthesizer modules which can be removed, reorganized, and replaced with Pittsburgh Modular or other eurorack compatible modules. The System 90 Synthesizer uses the Pittsburgh Modular Cell[90] Case and Power Supply to house and power the modules.


At the heart of the System 90 Synthesizer beats two very different hearts. The first is a 2nd generation, analog, complex waveform oscillator. This oscillator offers a full complement of standard waveforms including sine, triangle, saw, and pulse waves in addition to a sub octave generator, modulatable blade wave, and serious modulation options, creating a huge sonic base to build on.

The second heart of the System 90 Synthesizer is the DNA Symbiotic Waves module, a digital dual oscillator and waveform processor. Each oscillator within the Symbiotic Waves offers a selection of 16 unique waveforms. Symbiotic Waves mixes the output of the two oscillators using a built in wave processor. The processor section combines the output of both oscillators using 1 of 16 different methods with unique and amazing results.


The System 90 Synthesizer features the LPG, a character rich, triple mode lopass gate module that creates a palate rich with organic plucks, warm and gummy sweeps, and uncontrolled aggression.. 

Dual multifunction envelopes offer a wide range of creative potential. Each envelope module functions as a voltage controlled attack and decay or attack, sustain, and release, LFO, envelope follower, slew (portamento) and more.



Midi to CV Converter

Monophonic Mode

Duophonic Mode

Dual Monophonic Mode

Symbiotic Waves

Dual Digital Oscillator

Multiple Processing Modes


Analog Saw Core

Wide Frequency Range

Complex Modulation

Sub Octave Generator

Multiple Waveforms


Dual Independent, Wide Range Voltage Controlled Low Frequency Oscillators


Multi-Function Processor


Noise Source

Sample & Hold

Voltage Inverter

Mix Mult

Multi-Function Signal Router

3 Channel Mixer

3 Attenuators

Dual Passive Signal Multipliers

Lopass Gate

Multi-Mode Processor

Low Pass Filter

High Quality VCA

Lopass Gate

Inverting CV Input

Ping Input

2x Envelope

Voltage Controlled Signal Processor

Envelope Generator


Envelope Follower

Slew (portamento)

Trigger Delay

Dual VCA

Dual Voltage Controlled Amplifier

Dual Voltage Controlled Mixer

Attenuated CV Input

Pass-Thru Level Attenuators


Stereo or Dual Mono Outputs

Individual Headphone and Line Out Volume Controls

System 90 Manual and Patch Guide

System 90 Synthesizer Specs

Pittsburgh Modular Cell[90] Desktop Case

     90hp Eurorack Desktop Case

     Sliding Nut Mounting Nut System

     Dimensions: 19.5" x 7.5" x 5"

Integrated Power Bus Board

     +12v 850mA / -12v 850mA / +5v 250mA

     External 12v / 2000mA / AC Power Adapter

15x 3.5mm Patch Cables

     5x 6" Patch Cables

     5x 12" Patch Cables

     5x 24" Patch Cables