Inspired by the pinnacle of analog synthesizers, the mighty Yamaha CS-80, UNSTABLE is in no way intended to be a CS-80 emulator but still probably closer to the real hardware than anything out there.


UNSTABLE SYNTH

A modern go at the famous Yamaha CS-80 Synthesizer.

ANALOG OSCILLATORS

UNSTABLE features two synthesis layers, each offering a noise, sawtooth, and pulse wave oscillator, with adjustable pulse width and variable speed pulse width modulation. Unlike the Yamaha CS-80, the level of each oscillator is adjustable, allowing for free mixing of the waveforms, which are closely modelled after the original.

FILTERS

The CS-80 features two state-variable filters in series, which allow for a unique subtractive sound synthesis, unlike most common synthesizers. In UNSTABLE, the high-pass filter is modelled after the original; we put a little more beef into the low-pass filter, however, providing a vaster range of musical harmonics.

RING MODULATOR

The Yamaha CS-80 features the most musical ring modulator ever built, and we did our best to model it as closely as possible, with its own analog-style attack and decay envelope modifying the modulation speed.

RIBBON CONTOLLER

Use the innovative on screen ribbon controller to pitch bend your sound up to an octave.

POLY PRESSURE

The full version (not the beta) will feature polyphonic aftertouch, just as the original hardware did.

ARPEGGIATOR

The full version of UNSTABLE will feature a sophisticated 16 step arpeggiator with variable note and modulation values.

ANALOG DRIVE

A dedicated drive circuit adds analog warmth and subtle harmonic distortion for loudness and crisp presence that cuts through your mix without sacrificing dynamics.

EFFECTS

UNSTABLE features the popular effect engines of DarkStar Reverb and Delay, as well as the luscious WingMen Chorus, to bring your sound to the next level. Imagine a CS-80 with something along the JUNO-60 Chorus and Blackhole reverb.

Audio Demos

All demos are UNSTABLE only, no external effects!

Ring Modulator

Blade Runner Lead


Soft Bells


CS-80 Guitar


Pulsed Organ


Smooth Mover Arp


System Requirements


Operating Systems


MAC:
macOS Ventura (13.6) or higher
(Apple silicon Macs supported)
64-bit only

PC:
Windows 10 or 11
64-bit only

Plugin Formats

VST3 (PC/MAC), AU (Mac only)

IMPORTANT NOTICE FOR MAC USERS

MAC Users may have to confirm the use of unsigned software in their system settings for the plugin to work. Please refer to this guide on the Apple website or this YouTube tutorial.

LICENSING

To obtain a license code (serial), send payment of €29,- (introduction offer valid until May 1st 2025, regular cost €69,- thereafter) via Paypal to bandcamp@morphoice.com and state "UNSTABLE License" and your e-mail address in the subject. Please use the friends & family option to make sure no fees are deducted. The serial will be linked to your email, and cannot be given to others or we will know and remove it. Please be fair!


DOWNLOAD UNSTABLE

Download the current plugin version 1.0.11 below.



FACTORY PRESETS

We haven't made many factory presets yet, but more will be added shortly. To download a the factory presets click the button below and put them into the preset folder. You can get to the preset folder by clicking on the top left button "MORE" in the preset browser. Have fun!