AddIt

Think of AddIt as a compact sound lab: eight stacked oscillators give you dense harmonic material, and a generous modulation matrix lets you morph tones in real time. It offers four classic wave shapes and a pair of multimode state-variable filters so you can sculpt anything from glassy pads to aggressive, metallic sequences. The interface groups modulation into separate buses for level, tuning and stereo placement, which makes routing intuitive and creative.

I’d reach for this when I want animated textures that shift over time — whether that’s a swelling ambient bed, an evolving arpeggiated lead, or unusual percussive hits. It ships with a focused set of factory patches that showcase its character, but the real fun is in dialing in your own combinations with three LFOs and three envelopes for per-parameter motion.

• Oscillators: 8-voice additive stacking for rich harmonic layering.
• Waveforms: Four fundamental wave shapes for building basic to complex spectra.
• Filters: Two multimode state-variable filters for flexible tone shaping.
• Modulation: Separate buses for amplitude, pitch and stereo with 3 LFOs and 3 ADSR envelopes.
• Format & Platform: VST2 plugin for Windows.