Synthetech Sound Вђ“ Spectra Additive Resynthesiz... May 2026

The synth features 2 harmonic envelopes (each containing 256 DADSR envelopes), 3 sixteen-stage MSEGs, and 2 customizable LFOs.

It includes a spectral analyzer that can analyze and resynthesize existing periodic, harmonic waveforms, allowing users to recreate real-world sounds with high accuracy. Synthetech Sound – Spectra Additive ReSynthesiz...

Only available as a Rack Extension for Reason . High Value: Offers professional-grade features for free. The synth features 2 harmonic envelopes (each containing

Are you looking to use Spectra for or for creating original patches from scratch? Spectra Additive ReSynthesizer | Spectra | Shop High Value: Offers professional-grade features for free

The developer, Synthetech Sound, is no longer active, meaning no future updates are expected. Verdict

Highly capable of creating everything from clean digital tones to complex, evolving textures.

Users can literally "draw" their own harmonic spectrums, waveforms, and filter responses directly in the editor.