FB-3100 – v1.2.2 [01-Jul-2026]

Make sure to visit
Kourosh Boutorabi's
FB-3100 hardware controller
project page!

The FB-3100 is a software instrument for Microsoft Windows (VST2/VST3/CLAP/AAX) and Apple macOS (VST2/VST3/CLAP/AU/AAX) simulating the KORG PS-3100 Polyphonic Synthesizer from 1977. It is written in native C++ code for high performance and low CPU consumption. Main features are:

• Close emulation of behavior and all controls of the original hardware
• Band-limited oscillators, classic two-pole lowpass filters
• Resonators section
• Two Modulation Generators, Sample & Hold
• Additional paraphonic Envelope Generator
• Semi-modular patch panel
• Micro-tuning option
• Additional tweaks
• MIDI Learn – all parameters can be controlled by MIDI CC
• Plug-in supports Windows and macOS (32 bit and 64 bit)

On the track "shine", the FB-3100 is the only audio source plus some delay, reverb, and slight compression.

Learn how to install FB-3100 on your Mac!

FB-3100, FB-3200, and FB-3300 were subject of KVR's One Synth Challenge #106 (OSC).
Go to the official OSC website and listen to the submissions of this great event!

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