Free Semi-Modular Synth Inspired by the Korg PS-3300
If you’re into vintage analog synths, you’re going to love the Full Bucket FB-3300. Released in April 2025, this free software synthesizer faithfully models the legendary Korg PS-3300 from the late 1970s — one of the rarest and most expensive synthesizers ever built.
Designed by Full Bucket Music, known for their high-quality freeware instruments, the FB-3300 brings that classic semi-modular architecture straight to your DAW — no need to spend a fortune on hardware.
What Is the FB-3300?
The Korg PS-3300 was famous for its polyphonic power, flexible patching, and massive sound. The FB-3300 emulation captures all of that magic while adding modern conveniences to make it more accessible to today’s producers.
With three independent polyphonic blocks, resonators, multiple LFOs, envelopes, and full patching flexibility, this synth is a playground for sound designers.
Key Features of Full Bucket FB-3300
- ✅ Accurate Emulation of the Korg PS-3300 (1977–1981)
- ✅ Semi-Modular Architecture – patch system for deep sound design
- ✅ Microtonal Tuning – explore scales beyond 12-TET
- ✅ Polyphonic – three independent synth blocks for massive layering
- ✅ Modern Additions – scalable GUI, MIDI CC support, flexible automation
- ✅ Preset Bank – a collection of ready-to-use sounds to get started
- ✅ Cross-Platform – available in VST2, VST3, AU, CLAP formats for Windows & macOS
Why Use the FB-3300?
- 🎹 Authentic Vintage Sound – brings the PS-3300’s massive analog tone to your computer
- 🎛️ Endless Sound Design – from lush pads to strange modular textures
- 💡 Perfect for Experimentation – semi-modular flexibility without the complexity of full modular rigs
- 💯 Completely Free – Full Bucket Music releases all their plugins for free, only asking for optional donations
Download FB-3300 (Free)
👉 Download FB-3300 – Full Bucket Music
Formats: VST2, VST3, AU, CLAP
OS: Windows & macOS
Release: April 2025
Final Thoughts
The Full Bucket FB-3300 is a gift for producers and synth lovers who want to explore the rich world of semi-modular analog synthesis without spending a dime. It’s a faithful recreation of one of the most iconic and rare synthesizers in history, with all the modern features needed to fit into your workflow.
Whether you’re producing ambient soundscapes, electronic music, or cinematic textures, this plugin deserves a spot in your collection.
🔥 Download it now and start exploring the world of the PS-3300 in software form.
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