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Astra by Splice

The inspirational polysynth with FM, wavetable, granular, analog, and sampler oscillator sources—plus limitless customizability, presets galore and deep integration with the Splice workflow.

Compatible with macOS and Windows. Available as VST3 and AU.

Screenshot of Astra Dashboard

Free with Splice Creator Plans

Astra is included with every Creator and Creator+ Plan, and is also available free for 14 days with a Splice trial. To install Astra, click on the Apps & Plugins tab in the Splice Desktop app.

From rave stabs to radiant strings

Astra’s collection of oscillator sources range from glassy FM and granular glitchiness to classic analog warmth. It crushes lead sounds and sub-shaking basses, and definitely holds its own with evolving arps and transformational FX. You can even use your own samples—for sound design that’s totally yours. Take your tracks to new sonic territory with Astra.

Screenshot of Astra Feature Waves
Screenshot of Astra Feature Macros

Total control

Personalize any existing Astra preset, or design sounds from scratch. Just drag and drop parameters to the four macros, name them what you want, and adjust multiple parameters in one motion. The Macro Sequencer lets you dial up the vibe, by assigning a step sequence to the macros—for trance-like patterns and hypnotic rhythms.

“Astra’s versatility is so dynamic—with one knob I can transform something from a kick to a synth.”

– Madame Gandhi
Check out Madame Gandhi’s Astra presets
Screenshot of Astra Feature Note Sequencer

Make your music move

Astra’s Note Sequencer lets you program rhythmic, in-sync synth sounds that add mind-opening movement to your music. With customizable sequencer lanes for pitch, velocity and gate, you can create squelching acid lines from scratch, turn your samples into percussion loops, or create and recall rich arpeggios locked to the scale of your choice. Your wild polyphonic dreams are Astra’s one assignment.

Creativity not complexity

Astra’s 10-slot Modulation Matrix lets you assign intricate interactions between its different modules—just drag-and-drop parameters to Mod slots. Like a hardware synth, Astra can sweep, morph and transform, to add layers of creativity to your musical creations. Etch your mark on the music you make.

Screenshot of Astra Feature Mod Matrix
Screenshot of Astra Presets

Thousands of presets. Zero distractions.

Blow past creative slumps with Astra’s 225 factory presets and inspirational starting points for all kinds of music. And if you’re feening for more, fire up Splice Sounds and filter by Astra Presets to find over 8,000 additional presets, which you can now audition in your DAW without spending a single credit.

Free with Splice Creator Plans

Astra is included with every Creator and Creator+ Plan, and is also available free for 14 days with a Splice trial. To install Astra, click on the Apps & Plugins tab in the Splice Desktop app.