JUPITER-4 is a software synthesizer from Roland that recreates the 1978 JUPITER-4 hardware using enhanced ACB technology.
JUPITER-4 at a glance
| Developer | Roland |
|---|---|
| Type | Instruments / Synth |
| Formats | VST2, AU, AAX |
| Operating systems | Windows 10 or later, macOS 11 or later |
| Architecture | 64-bit |
| Price on Plugin Boutique (October 2026) | €68.43 (regular €175.53) |
What JUPITER-4 does
The developer describes the plugin as an authentic recreation of the original JUPITER-4, the first synthesizer of the JUPITER line, and the instrument is presented as the starting point of the storied legacy of Roland analog polysynths. Roland analyzed the original hardware units, circuit diagrams and other historical material in the ACB process, and then used that information to recreate the circuit behaviors of the vintage instrument, including the interaction of all components working together.
The interface is detailed enough to give the feel of working on vintage hardware. The sound is built from one VCO, and the combined characteristics of the oscillator, filter and LFO section are described by the developer as making the sound thick and warm. Double polyphony of the original hardware is selectable from two eight-note settings, and a Circuit Mod function lets users tweak the sonic character in real time.
Key features
- ACB sound modeling. Analog Circuit Behavior modeling recreates how the components of the original instrument interact, not just the settings of its controls.
- Double polyphony. Polyphony can be switched between two eight-note settings, matching the double polyphony of the original hardware.
- Circuit Mod. The Circuit Mod function lets users change the sonic character of the sound in real time.
- Ensemble chorus and effects. The built-in Ensemble chorus is paired with onboard effects that include classic reverb, flanger, delay and overdrive.
- Arpeggiator and extended parameters. An advanced arpeggiator and extended parameters go beyond the original hardware controls.
- PLUG-OUT with SYSTEM-8. PLUG-OUT compatibility allows the software to be used with the SYSTEM-8 hardware synthesizer.
Use cases
- Recreating vintage patches. The original patches are included, so the sounds of the 1978 instrument can be loaded and edited.
- Real-time sound shaping. Circuit Mod is used to change the character of a sound while it plays.
Compatibility
The plugin comes as VST2, AU and AAX for Windows and macOS, with a minimum of Windows 10 and macOS 11. The macOS build is 64-bit.
Who it is for
The instrument suits producers and sound designers who want the sound of an early Roland polysynth inside a DAW, and mix engineers who need the same timbres in a session without hardware. Owners of the SYSTEM-8 can use the plugin-out link to move sounds between software and hardware.
JUPITER-4 compared with similar plugins
Alternatives in the same instrument category include Mercury-4 from Cherry Audio, which lists VST3, VST2, AU, AAX and Standalone formats, and Jup-8 V from Arturia, which lists VST2, AU, AAX and Standalone formats. Both are synthesizers for Windows and macOS, and both differ from JUPITER-4 in developer and format list. Mercury-8 from Cherry Audio is also a Windows and macOS synthesizer with VST3, VST2, AU, AAX and Standalone formats.
| Plugin | Developer | Type | Formats | Systems | Price |
|---|---|---|---|---|---|
| JUPITER-4 | Roland | Synth | VST2, AU, AAX | Windows, macOS | €68.43 (regular €175.53) |
| Mercury-4 | Cherry Audio | Synth | VST3, VST2, AU, AAX, Standalone | Windows, macOS | €48.59 |
| Jup-8 V | Arturia | Synth | VST2, AU, AAX, Standalone | Windows, macOS | €147.76 |
| Mercury-6 | Cherry Audio | Synth | VST3, VST2, AU, AAX | Windows, macOS | €58.51 |
| Mercury-8 | Cherry Audio | Synth | VST3, VST2, AU, AAX, Standalone | Windows, macOS | €68.43 |
Price and availability
JUPITER-4 was listed on Plugin Boutique in October 2026 at €68.43, reduced from €175.53. Prices change often, so the store page shows the current one.
JUPITER-4 FAQ
Does JUPITER-4 run on Apple Silicon Macs?
MacOS 11 as the minimum and a 64-bit macOS build, so it runs on macOS 11 and later.
Is there a working serial key or keygen for JUPITER-4?
Serial keys, activation codes and keygen files are the strings most often typed alongside the plugin name, and the release circulates as a repack.
Is JUPITER-4 available as a torrent or magnet link?
The plugin is distributed as a torrent and magnet link, and the developer's name is paired with crack and warez in search queries.
Where can I download JUPITER-4 crack for free?
Free full version and direct download links for the VST crack and AU crack are the phrases most often used when searching for the release.