The Roland System 100 was an analog synthesizer, manufactured by the Roland Corporation from Japan. It was released in 1975 and manufactured until 1979. The System 100 is a semi-modular monophonic synth consisting of 5 module components:
The Synthesizer 101 section is the heart of the system, from which you could add-on any of the other modules of your choice. Different combinations of these components can be used to create systems of varying potential. It features an ADSR, LFO, Portamento, a VCO (with pulse width modulation and a tuning knob marked in Hz from 10Hz to 10kHz), white or pink noise, an audio mixer (with sliders for VCO, Noise, and External Input), a high-pass filter, a low-pass VCF, and a VCA with input for LFO. There are also buttons for auto-glide and manual-glide and an A-440Hz tuning oscillator. All of this in 21 sliders, five knobs, 14 mini-jack sockets, seven switches, and three 1/4" jacks (for headphone and high and low outputs).
While the System 100 was not fully modular, unlike the later Roland System-100M and the Roland System 700, a complete system nevertheless formed an expandable two-oscillator monosynth with sequencing, monitoring and effects capabilities. Each unit was independently powered, so complex patches wouldn't cause either oscillator to drop in pitch. Uniquely for the time, the System 100 didn't "lock in" the oscillators to fixed footages or pitches, allowing greater flexibility for sound design. It uses the 1V/oct standard, so can be used with a MIDI-to-CV converter.
The System 100 is still sought-after due to its filter, sequencer and patching capabilities, though the oscillators can be unstable at the lower frequencies, and the keyboard is prone to mis-triggering and double-triggering if not used regularly. Generally, however, it is a robust and reliable system. The SH-5 and SH-7 are similar in styling, but both have fixed signal paths, as opposed to the semi-modular System 100.
Need a copy of the service manual or schematics?
Download the Roland System 100 service manual (PDF).
What's your Roland System 100 worth in 2022? Here are some recently sold items with prices.
|Roland System 100 Model 101 102 In Top||12/2021||$6764|
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|Roland System 100 Model 104 Sequencer In||12/2021||$2600|
|Roland System 100 Model 104 SEQUENCER||11/2021||$2200|
|TOP CLASS Roland System 100 Model101||12/2021||$1699|
|See all sold items on eBay for more prices||01/2022||-.--|