When reSIDfp gets Juicey,
you end up with….
Rediscovering the Timeless Sound of the Commodore 64’s MOS 6581/8580 Sound Interface Device (SID) Sound Chip
Do you want surgical precision over your waveforms?
Here’s an old-school 8bit retro synth in your DAW designed for direct SID register access.
You’ll feel like you’re programming the sound chip directly.
Built on top of libsidplayfp – reSIDfp, the SID emulation champ for decades.
Built on the cross platform JUCE Framework for both the VST and Standalone versions
Seamless integration with your favorite Digital Audio Workstation
| Tracktion Waveform | Bitwig Studio | Ableton Live |
| LMMS | FL Studio | Mixcraft |
| PreSonus Studio One | Cockos Reaper | Steinberg Cubase |
Control every SID parameter, precisely.
reSIDue is the most accurate, flexible, and powerful Commodore 64 SID synthesizer available. Whether you’re recreating classic chiptunes or pushing the boundaries of what the SID chip can do, reSIDue gives you the authentic tools and modern convenience to make it happen.
Wavetables Everywhere
Every parameter of the SID 6581/8580 has its own unique wavetable. Every step, every cycle, you’re in control.
Direct Register Access
There’s no oscillators or envelope generators outside of the SID’s tone generators. What you program into the wavetables is what the SID chip does.
Do it your way.
Highly Programmable
With loops, jumps and conditional logic baked into the wavetables, you’ll be making sounds fast instead of endless numberwanging.
Perfect for…
Sound Designers
exploring unique sonic territories
Chiptune Musicians
seeking authentic C64 sounds
Retro Game Developers
needing period-accurate audio
Electronic Producers
adding nostalgic textures
Demoscene Artists
continuing the C64 tradition
Built on libsidplayfp reSIDfp
Built on top of 30+ years of community refinement since original reSID (1998), libsidplayfp reSIDfp is the go-to SID emulation engine. Tried, tested & proven, libsidplayfp reSIDfp drives reSIDue’s faithful reproduction of your favourite 8bit sound.
Professional Integration
DAW Compatible
Works seamlessly with Tracktion Waveform, Bitwig Studio, Ableton Live, LMMS, FL Studio, Mixcraft, PreSonus Studio One, Cockos Reaper, Steinberg Cubase, and more.
Compact & Cross-Platform
reSIDue is a <40MB VST3. Since we only rely on the open source reSID & Juce frameworks, reSIDue is nicely cross platform.
Standalone Available
Use reSIDue as a standalone application or as a VST3 plugin—your choice.
Rendered with Juce
The User Interface, MIDI and Audio routing use the pervasive Juce framework for top notch control.
What’s Coming Next
We’ve got a plan for features and how reSIDue will be both commercial and free open source.
The soul of the machine
In an era of pristine digital audio and virtually unlimited sonic palettes, a raw, character-filled voice from the past continues to captivate musicians, producers, and listeners alike. It’s the sound of the MOS Technology 6581/8580, better known as the Sound Interface Device, or SID chip. More than just a piece of vintage hardware, the SID chip was the soul of the Commodore 64 home computer and the defining sound of a generation.
Sound of the MOS 6581/8580 SID chip
Long before complex digital synthesisers became commonplace, the SID chip delivered an audio experience that was lightyears ahead of the primitive beeps and boops of its competitors. Its revolutionary hybrid design, which combined digital oscillators with rich, analogue filters, gave it a unique sonic identity. It could produce everything from deep, gritty basslines and searing leads to bubbling textures and complex percussive effects. This wasn’t just sound; it was music with personality, warmth, and a distinct electronic grit that remains unmistakable to this day.
A sound that defined a generation
For millions who grew up in the 1980s, the SID chip was the soundtrack to their youth. Visionary composers like Rob Hubbard, Martin Galway, and Ben Daglish weren’t just writing game tunes; they were composing miniature electronic symphonies. They pushed the hardware to its absolute limits, developing ingenious programming tricks to create polyphony and effects the chip’s designers never envisioned. The driving pulse of Commando, the atmospheric tension of The Last Ninja 2, and the energetic themes of International Karate are etched into the cultural memory, proving that profound musical expression can arise from technical limitations.
Programmed by a madman
I used to be a demoscene musician and coder and I’ve been involved with vintage electronics & sound ever since. When I was a kid, with my C64 plugged into the family TV………
Got questions? I’ve got answers.
Is reSIDue a VST?
Yes it is a VST. reSIDue doesn’t rely on any other framework let alone proprietary ones such as Kontact. reSIDue is a <40MB VST3. Since we only rely on the open source reSID & Juce frameworks, reSIDue is nicely cross platform.
Is there a standalone version?
Yup. That’s a great thing about the frameworks we use, not only is the VST available on all platforms, we can build a standalone version.
How closely does reSIDue replicate the sound of the Commodore 64’s SID chip?
reSIDue is very accurate. The developers of reSID have poured years of research & development into the characteristics of both models (and all revisions) of the SID chip. They’ve gone to the lowest levels of analysis such as oscilloscope and chip pin-out monitoring. reSID is bang-on accurate.
Is there a plan?..A roadmap?
Kinda, but it depends on you. I’ve got ideas for future versions. Patch management beyond the basics would be nice. We’ll decide together what goes into future versions of reSIDue.
Is reSIDue open-source?
Not yet… I do intend to open-source reSIDue prior to version 1 (the first general availability release) and since I’m currently at version 0.9.x, it isn’t far away before I do. reSIDue is feature complete and is in internal testing at the moment. As soon as I’m sure I’ve worked out the embarrassing bugs, I’ll make the Github repository public.
Standalone Free.
VST coming soon.
Try out the alpha version