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The SYSTEM-100 PLUG-OUT Software Synthesizer is a modern reproduction of the now-legendary semi-modular monosynth from 1975. It integrates the features of the original Model 101 Synthesizer and Model 102 Expander units, resulting in an incredibly fat and uniquely versatile two oscillator monosynth with modular routing capabilities. Designed for SYSTEM-1 and 1m as well as Mac and PC hosts, the new SYSTEM-100 uses Analog Circuit Behavior to faithfully recreate every detail of the warm, expansive sound of the original, with a level of authenticity that can only come from Roland.
  • Perfect replica of SYSTEM-100 sound and behavior
  • ACB provides expansive, liquid tone of the original
  • Model 101 Synthesizer and Model 102 Expander in a single instrument
  • Sophisticated architecture with dual VCO, dual LFO, S&H, Ring Mod, Noise and more
  • Versatile semi-modular patching capabilities
  • Integrated Phaser with modulation inputs, Reverb and Delay
  • Advanced arpeggiator with Scatter capabilities
  • VST, AU and PLUG-OUT compatible

Modular Monosynth

Created in 1975, and both distinctive and sought-after to this day, the SYSTEM-100 broke new ground for monosynths. In addition to its ultra-fat oscillators and creamy filters, it had modular patching capabilities, vastly increasing the sound design options. Pairing a Model 101 Synthesizer with a Model 102 Expander gave you two VCOs and two LFOs to work with, as well as Sample and Hold, Ring Modulation and a Noise Generator that all worked seamlessly together. With the addition of its modular routing capabilities, the SYSTEM-100’s sonic palette was staggering - effortlessly turning out the fattest of bases, in-your-face sync leads, dense textures, and exotic soundscapes.

The New SYSTEM-100

With the new SYSTEM-100 PLUG-OUT Synthesizer, the sound of this legendary instrument is perfectly reproduced and brought to life with Analog Circuit Behavior (ACB). ACB faithfully captures the sound and feel of our most revered classics, using original design specs, and a detailed, part-by-part analysis of each analog circuit. While the sound and behavior is reproduced with total accuracy, there are a number of modern additions that improve upon the original design.

The features of the original Model 101 Synthesizer and Model 102 Expander are combined into a single interface, allowing you to use both VCOs, both LFOs, S&H, Ring Mod and so on with no patching. Of course, the signal path can be altered and parameters modulated by connecting cables between the patch points. A new 14x15 Routing Matrix makes for super-quick patching with all connections still visually reflected as patch cables on the SYSTEM-100’s control panel. You can toggle patching on/off as well as quickly see the entire signal flow with convenient buttons right above the Routing Matrix.

Like other PLUG-OUTs there are dual ADSR envelopes (VCF and VCA) and the advanced pattern generation of the Scatter equipped Arpeggiator. Six arpeggio types with six step settings combine with variable Scatter type and depth to create a seemingly infinite selection of patterns. A lush phaser with modulation inputs joins the superb reverb and delay, creating an effects section perfectly suited for synth sounds.


While multiple instances of the SYSTEM-100 plug-in can be used in any VST or AU compatible DAW, the SYSTEM-100 PLUG-OUT Software Synthesizer offers seamless integration and unique capabilities for SYSTEM-1 and SYSTEM-1m owners, including knob-per-function hardware control, stand-alone portability, and semi-modular patching capabilities (1m only).

Connect a SYSTEM-1/1m to your computer and it becomes a dedicated controller, only lighting the appropriate knobs and sliders pertinent to the SYSTEM-100. Transfer sounds back and forth between the hardware and software and even use the SYSTEM-1/1m as a high-quality audio and MIDI interface. Or break free entirely and PLUG-OUT directly to the SYSTEM-1/1m, creating a stand-alone hardware SYSTEM-100 synthesizer with real physical controls that can go anywhere and doesn’t require a computer.

With the SYSTEM-1m, you can even use the physical audio and CV/Gate patch points on the hardware with any of the available PLUG-OUT synths. This means semi-modular versions of classic Roland synths are now possible. Pairing the SYSTEM-100 with the SYSTEM-1m gives you dedicated high-resolution controls and both virtual and physical routing and modulation capabilities. The results are simply mind-bending.


Maximum Polyphony 1 voice
LFO-1/LFO-2 Waveform (SIN, TRI, SAW, SQR, S&H)
LFO Rate
LFO Offset
EXT CV Input
EXT CV Input Gain
LFO Output
S&H (SAMPLE&HOLD) Sample Time
EXT Input
S&H Output
Clock Output
Keyboard CV Output
VCO-1/ VCO-2 Glide Input
VCO LFO Modulation Depth
Waveform (SAW, SQR, TRI)
Range (64, 32, 16, 8, 4, 2)
Pulse Width
EXT CV Input (VCO-1 only)
EXT CV Gain (VCO-1 only)
Sync Input (VCO-2 only)
Sync Output
Fine Tune (VCO-2 only)
Coarse Tune (VCO-2 only)
VCO Output
RING MOD Ring Modulator Input
Ring Modulator Output
NOISE Noise Type
Noise Output
Mixer Output
VCF Low pass filter LFO Modulation Input
Low pass filter ADSR Input
High pass filter Cutoff Frequency
Low pass filter Cutoff Frequency
Low pass filter Resonance
Low pass filter LFO Modulation Depth
Low pass filter ADSR Gain
Low pass filter Keyboard CV
Initial Gain
LFO Modulation Depth
ADSR Trigger Mode (GATE, LFO, GATE + TRIG)
Envelope Attack Time
Envelope Decay Time
Envelope Sustain Level
Envelope Release Time
ADSR Output
Effect Phaser LFO Modulation Input
Phaser Manual Input
Phaser Level
Reverb Level
Delay Level
Delay Time
Controller Volume
Bend Range
Tempo Sync (ON, OFF)
Key Assign Mode
Key Hold (ON, OFF)
Octave (-3, 2, -1, 0, 1, 2, 3)
Arpeggio Arpeggio (ON, OFF)
Arpeggio Type (1 Oct Up, 1 Oct U+D, 1 Oct Down, 2 Oct Down, 2 Oct U+D, 2 Oct Up)
Arpeggio Step (1/4, 1/8, 1/16, 1/4T, 1/8T, 1/16T)
Scatter Type (1–10)
Scatter Depth (-5–+5)
Tune 430–450 Hz
Sampling Frequency 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Paches per bank 64 patches
*User can make new user banks.
Plug-In Formats VSTi 2.4 (32 bits, 64 bits) * Windows only
VSTi 3.6 (32 bits, 64 bits)


System Requirements (macOS™)

Operating System macOS™ 10.8.5 or later
Host Application VST instruments (VSTi) version: VST 3.6 compatible
Audio Units (AU) version: V2 Audio Units compatible
CPU Intel® Core™ 2 Duo or better, Apple silicon compatible 
RAM 4 GB or more
Hard Disk 100 MB or more
Display resolution and Colors 1280 x 800 dots or higher, 16.7 million colors or more
Other You'll need Internet connectivity to activate this software.
You'll need installation SYSTEM-1 driver to plug-out this software to the SYSTEM-1.

System Requirements (Windows®)

Operating System Microsoft® Windows® 7 SP1
Microsoft® Windows® 8/8.1
Microsoft® Windows® 10
* incompatible with Windows® RT, Windows® Phone or virtual machines such as Hyper-V, Virtual PC.
Host Application VST instruments (VSTi) version: VST 2.4/3.6 compatible
CPU Intel® Core™ 2 Duo or better
RAM 2 GB or more
Hard Disk 100 MB or more
Display resolution and Colors 1280 x 800 dots or higher, 24 bits Full Color or more
Other You'll need Internet connectivity to activate this software.
You'll need Adobe Reader (available free of charge) in order to read the online help.
You'll need installation SYSTEM-1 driver to plug-out this software to the SYSTEM-1.

*Although Roland has tested numerous configurations and has determined that on average, a computer system similar to that described above will permit normal operation of the PLUG-OUT SOFTWARE SYNTHESIZER, Roland cannot guarantee that a given computer can be used satisfactorily with the PLUG-OUT SOFTWARE SYNTHESIZER based solely on the fact that it meets the above requirements. This is because there are too many other variables that may influence the processing environment, including differences in motherboard design and the particular combination of other devices involved.

Microsoft Windows is a registered trademark of Microsoft Corporation in the United States and/or other countries.
VST is a trademark and software of Steinberg Media Technologies GmbH. 


System 100 Software Synthesizer Owner's Manual (Japanese)


System 100 Software Synthesizer Owner's Manual (English)