Mercury-8 synthesizer builds on Cherry Audio's renowned Mercury legacy with a passionate focus on detail and modern technical advancements. Every aspect of the original hardware has been meticulously modeled to capture the authentic sound and behavior that made the JP-8 so legendary. Furthermore, Mercury-8 goes "beyond Jupiter" by offering expanded polyphony, versatile modulation options, studio-quality effects, expressive performance capabilities, and even data exchange with the original hardware.

Get Mercury-8 today or get it as part of the new Synth Stack 6


Cherry Audio's Mercury-8 utilizes advanced circuit and behavior modeling techniques to ensure unparalleled sonic accuracy and even compatibility with the original synthesizer. Unlike sample-based emulations, Mercury-8 uses virtual analog synthesis, enabling comprehensive, dynamic control over all synthesis parameters while remaining compact. Its precision not only captures the distinctive sound and essence of the JP-8 but also facilitates data exchange with MIDI-modified hardware.

Mercury-8 features a highly optimized dual-layer architecture that supports 16 polyphonic voices per layer, enabling powerful split keyboard and dual-stacked modes. Analog drift and condition controls allow fine-tuning of the synth's age and state, and the multi-voice mode provides subtle to extreme variations in pitch, panning, filtering, and envelopes for tones and patterns.

The comprehensive modulation matrix includes four slots with user-friendly click-to-assign functionality, offering dozens of source and destination options. The built-in arpeggiator and 16x4 programmable polyphonic step sequencer are both syncable and transposable, and feature flexible humanize settings to create endless pattern possibilities. 

Furthermore, Mercury-8 features three independent effect chains and provides 20 studio-quality effects for chains that can be customized, saved, and recalled. And producers can get started immediately with over 600 stellar presets, including precise recreations of the original JP-8 factory patches along with "Factory Plus" enhanced versions.

Mercury-8 is not just another recreation of the legendary classic synthesizer; it transforms one of the greatest analog synths of all time into a fresh and inspiring tool for today's musicians and producers.

Mercury-8 Features:

  • The ultimate JP-8 emulation, engineered by Cherry Audio with its latest comprehensive circuit and behavior modeling techniques to provide unparalleled accuracy to -- and exclusive compatibility with -- the original hardware
  • Highly optimized, massive dual-layer voicing architecture with 16 polyphonic voices per layer. Keyboard split and stacked layer modes allow two simultaneously playable layers, with separate per-layer controls for all parameters, including synthesis, modulation, patterns, and effects
  • Two oscillators per voice for each layer deliver thick, vibrant tones with classic waveforms, sync, and accurate exponential FM cross-modulation
  • Triangle, ramp, sine sawtooth, noise, and square or variable pulse waveforms with pulse width modulation
  • High-pass and resonant low-pass filters for each layer faithfully recreate the legendary Jupiter curves, with 12 dB and 24 dB slope options
  • Two full ADSR envelopes per layer with velocity, independently assignable to filter, amp, and modulation for expressive control and dynamic sound shaping
  • Tempo-syncable LFO for each layer, with retrigger option
  • Analog Drift and Condition Controls to fine-tune the "age" of the synth from pristine new to unstable vintage, with adjustable VCO, VCF, VCA drift, and envelope slop
  • Solo, Unison, Poly-1 and Poly-2, Multi, and single-key Chord Memory assign modes
  • Multi-voice mode that adds adjustable "mini synth" trimmers to provide subtle or extreme voice variation in pitch, panning, filter, and envelopes to tones and patterns
  • Repurposed "digital display" interface with clickable access to extended features such as trigger and note priority, unison voices, multi-voice modes, condition, and drift
  • Over 600 out-of-this-world presets by ten sound design pros, along with the precise recreation of the 64 original JP-8 factory patches (with enhanced versions) and the eight factory setups, all accessible in a convenient preset browser. Also included are template presets that serve as ideal starting points for sound design in Mercury-8, and a MIDI controller mapping compatible with the Jupiter-X hardware synthesizer
  • Comprehensive modulation matrix with four slots and simple click-to-assign functionality: 25 sources and 43 destinations with optional "Via" controls, including Mercury-8's integrated effects
  • Syncable and transposable arpeggiator for each layer with Arp, Leap, Order, and Random modes, and Swing, Chance, and Feel to add degrees of randomness to arpeggiated patterns 
  • Syncable and transposable 16x4 polyphonic step sequencer for each layer with Start, Stop, Auto Start, and humanize options, with accurate DAW clock and step synchronization
  • Three independent customizable chains of effects, one for each layer, plus a global layer, with an individual effects modulator for each layer
  • 20 studio-quality effects that can be arranged, saved, and recalled within their effects chains, which are compatible and can be shared with Cherry Audio's Trident Mk III synthesizer: BBD Flanger, Compressor, Digital Delay, Digital Reverb, Distortion & EQ, Dual Delay, Dual Ensemble, Dual Phaser, Envelope Filter, Flanger & Chorus, Galactic Reverb, Lo-Fi, Lushverb, Ring Modulator, Seven Band EQ, Spring Reverb, and Tape Echo. New in Mercury-8 are DCO Chorus, Panner, and Pulser.
  • Persistent mini UI Effects controls for on/off, solo, bipolar modulator amount slider, and dry/wet mix for each effect. Global FX on/off, level, and stereo expand
  • Utility panels to easily copy, paste, swap, and move layers, effects chains, and sequencer data between presets
  • Directly import original JP-8 patch bank SysEx data (Encore Electronics format) via drag-and-drop
  • Export Mercury-8 preset data to SysEx data (Encore Electronics format)
  • Standalone virtual instrument and plug-in versions included
  • User-adjustable oversampling control
  • Complete MIDI control and DAW automation for all controls, with easy-to-use MIDI learn and mapping (Preset and Global)
  • Cherry Audio's popular Focus zoom-in feature, as well as standard UI zoom and resize via drag
  • Complete documentation available directly online from the instrument or in downloadable PDF format

Also available: Embark on a nostalgic journey from Hawkins High to Vice City with The Grid Preset Pack for Mercury-8, an exclusive collection of 100 future retro sounds for Mercury-8, created by acclaimed synthwave producer Michael Oakley.


Mercury-8 is available in AU, VST, VST3, AAX, and standalone formats, and a free 30-day demo is available.

macOS Requirements: 10.13 or above. macOS 13 Ventura supported. 64-bit required. Native Apple M1 or greater processor support, including Ultra. 3.4 GHz Quad-Core or M1 CPU with 8GB of RAM is recommended. Hard disk space: 155 MB

Windows Requirements: Windows 7 or above (including Windows 11), 64-bit required. Quad-core computer with 8GB of RAM is recommended. Hard disk space: 155 MB

An internet connection is required for product activation.

Title of Song

  • James Terris - Mercury-8 Presets - Basses
  • James Terris - Mercury-8 Presets - Poly
  • James Terris - Mercury-8 Presets - Pads
  • James Terris - Mercury-8 Presets - Motion
  • James Terris - Mercury-8 Presets - Leads