Cherry Audio Mercury-4 Brings Back ‘Primal Poly’ Sound Of Roland Jupiter-4

Cherry Audio has introduced Mercury-4, a new software synthesizer for Mac & Windows that’s inspired by the ‘primal poly’ sound of the Roland Jupiter-4.

Unlike the original design, though, Mercury-4 ups the polyphony to 16 voices, adds a built-in Space Echo style effect and comes with 400+ presets.

Here’s what they have to say about it:

“It’s the rarest and most sonically unique of the fabled Jupiter series, and we’ve gone to great lengths to recreate the subtle (and not-so-subtle) nuance and character of this beloved classic. Every aspect of Mercury-4 has been expertly modeled upon a vintage Jupiter-4 originally owned by Greg Hawkes of the legendary 80’s new wave band The Cars.

The Jupiter-4 had its share of disadvantages, including limited patch storage, just four voices of polyphony, and boat-anchor weight. Cherry Audio’s Mercury-4 improves upon the original’s design by offering 16-voice polyphony, infinite patch storage, velocity sensitivity, MPE support, and much more. We’ve even paired it with a fantastic model of the classic Roland Space Echo tape delay!”


  • “Authentically modeled” oscillator with sub-oscillator.
  • All filter characteristics modeled, including powerful low-frequency resonance.
  • Up to 16-voice polyphony.
  • Over 300 presets, programmed by industry veterans.
  • Unique arpeggio section w/tempo sync.
  • Wide-range LFO modulation with “inverted” mod characteristics.
  • Drift control for increased analog realism.
  • Stereo ensemble effect.
  • Tape echo style effect, with multiple reverb modes.
  • Tempo-syncable LFO.
  • Detunable unison mode.
  • Single-key chord memory mode.
  • Low CPU load.
  • One-click UI magnification.
  • MPE support.
  • Full MIDI control and DAW automation for all controls.

Pricing and Availability:

Mercury-4 is available now for Mac & Windows with an intro price of $39 USD (normally $59).