Kjaerhus Audio has released Spectra, a synthesizer plug-in which combines multistage additive synthesis with subtractive synthesis in an easy to operate and intuitive product.

Spectra provides you with a wealth of timbral possibilities, ranging from classic synthesizer sounds to re-synthesized instrument sounds and sound morphing.


  • Multistage additive and subtractive synthesis
  • 250 partials additive engine
  • 8 detune-able oscillators per voice
  • Harmony morphing with looping and time-stretch
  • Analog modeled filters
  • Polyphonic portamento
  • Audio Analyzer
  • 2 LFOs with 12 waveforms, sync and sample / hold
  • 5 multipoint envelopes with looping and time-stretch
  • Waveform presets
  • Full pedal implementation
  • Midi Modulation
  • Midi Learn
  • 650+ Preset Programs (constantly growing)
  • Parameter Automation (VST)
  • 256 Voices
  • Chorus / Flanger, Delay, Phaser and Reverb effects
  • Sample accurate processing
  • 2 banks preset system for easy program handling
  • MIDI range filtering
  • Transpose
  • Low CPU usage
  • Zero Latency

Visit Kjaerhus Audio for more information and a link to download a demo version of Spectra.