Bolt: Harmonics Synthesizer VST by Nektar Technology Free Download

Bolt's oscillators run on Harmonics Synthesis. Turning the HARMONICS and ROLLOFF knobs moves a waveform from a subtle sine toward a brighter pulse chain. The ODD switch restricts the oscillator to odd harmonics only, and adding DEEP pushes the waveforms toward saw or square shapes when ODD is active.

Each of the four oscillators (two main, two sub) has its own ADSR envelope and overdrive stage, and each includes a white noise generator. Unison Voice Double can stack up to four instances, and the synth offers both frequency modulation and X-Mod cross-modulation.

Bolt has one modulation envelope generator and three LFOs with 13 waveforms, including random and stepped shapes. LFOs can run free or sync to MIDI, and the developer notes their range extends from 0.01 Hz to 10 kHz, which allows audio-rate modulation. Each of the four modulation sources has four targets, and the targets are pre-assigned, so you raise an amount to hear the effect.

The four built-in effects are EQ, Chorus, Delay and Reverb, with three parameters per processor. Delay includes tempo sync, and the EQ offers parametric and bandpass modes.