Jussi vocal synthesizer plugin interface by Klevgrand

Jussi: Vocal Synthesizer Plugin by Klevgrand Free Download

Rated 4.1/5 on Plugin Boutique (250 ratings)

Jussi is a vocal synthesizer plugin by Klevgrand that emulates male voice vowels. It can sing anything from soft, airy choir-like vowels to harder, shouted tones, with formants controlled by note velocity.

VST2AUAAXWindowsmacOS

AVAILABLE ATPlugin Boutique

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Free trial available from the developer

01Overview

Jussi is a vocal synthesizer from Klevgrand built around a voice-like sound engine rather than a standard waveform oscillator. It emulates male vowels, and a set of parameters lets you shape the result from soft, airy choir textures to rougher, more aggressive tones. Formant behavior responds to how hard you play, which makes it a hands-on instrument for MIDI keyboard performance. It is available as a plugin for Windows and macOS in VST2, AU and AAX formats.

Best for

Choir-like vocal pads
Aggressive shouted vocal tones
Expressive legato lead lines
Vocal-style sound design

Developer: Klevgrand
Category: Synths
Store: Plugin Boutique

02Key features

What you get

Vocal-style male voice vowel emulation
Voice Character XY pad for intensity and narrowness
Throat emulation XY pad for grain and tonality
Formants controlled by playing velocity
Three legato modes: Off, On and Hold
ADSR with Turn-in and Turn-out pitch options
Built-in reverb

03In depth

Voice Character and Throat Tone Controls

Two XY pads do most of the shaping. The Character pad sets tone intensity: one axis changes the formant's Q value and the other changes its gain. The Throat pad adjusts grain (Y-axis) and tonality or noise (X-axis), so you can move between clean and breathy or gritty textures.

Because formant shape follows playing velocity, dynamics become a sound-design tool as well as a volume control.

Legato Modes and Envelope Behavior

Jussi offers three legato settings. Off works like an ordinary polysynth. On gives normal legato glides, controlled with the XY pad. Hold provides a smarter polyphonic legato mode when a sustain controller is used; the developer's documentation covers its details.

The ADSR envelope controls the volume of each triggered note, and its Turn-in and Turn-out options apply a pitch slide that maps to attack and release. A built-in reverb is included.

04Specs

Will it run?

Formats, systems and requirements as listed by Plugin Boutique. Missing details are left out, not guessed.

Developer	Klevgrand
Type	Plugin
Category	Synth
Formats	VST2, AU, AAX
Operating systems	Windows, macOS
Free trial	Yes

05FAQ

Questions, answered

What formats does Jussi support?

Jussi is available in VST2, AU and AAX formats for Windows and macOS. The system requirements list VST-3 as well.

What operating systems does Jussi run on?

Jussi runs on macOS 10.15 or later, optimized for the M1 processor, and on Windows 10 or later.

Does Jussi have a trial?

Yes, a trial version is available.

Do I need an internet connection to use Jussi?

If you access Jussi through a Rent to Own plan or the Beatport Studio membership, it runs through the Beatport Access portal and needs an internet connection every 30 days to validate your license.