Pure Sub: Bass Synthesizer Plugin by Arturia

Pure Sub separates the sound into three stages. The sub layer holds the fundamental, the harmonics layer adds octave and harmonic content, and the texture layer adds noise and corrosion sources. Each stage can be shaped on its own, which makes it easier to build a bass that keeps a clean low end while the upper harmonics are processed.

The harmonics section offers Pressure and Reese Harmonics modes, and Sub Regen restores a clean fundamental after processing. Ring modulation, AM and distortion shaping are available in the texture engine, along with Noise Sample and Corrosion modes.

The filter section includes more than 40 filter modes, with independent routing for the sub, harmonics and texture layers. The Sub Processor offers 33 modes for distortion, texture and tonal reshaping, controlled by a global Amount knob and six shaping macros.

After the sound is built, the FX rack provides 12 effect slots holding 19 effects, and presets can be saved for the rack. The Soft and Hard Maximiser modes handle loudness at the end of the chain.

Pure Sub includes three envelopes, one of them a dedicated pitch envelope, along with six flexible modulator slots and four macros. A Modulation Sidechain and MPE support allow the modulation to respond to the keyboard and other sources.

The plugin is NKS controller compatible and works with MTS-ESP microtuning, which suits producers who need custom tunings or hardware control.