Summary

Filtron is a free digital filter plugin by Polyverse Music offering a 12dB state variable filter that can transition smoothly between lowpass, bandpass, and highpass modes. It features high resonance capable of self-oscillation, internal saturation, and a post overdrive with two distinct modes. It supports multiple plugin formats and is optimized for stereo and audio rate modulation.

Features

• 12dB state variable filter with smooth transition between lowpass, bandpass, and highpass
• Self-oscillating resonance up to a level of 11
• Internal saturation algorithm providing a fat, warm sound
• Post overdrive with two modes: cold (screaming overdrive) and hot (warm and fuzzy overdrive)
• Stereo modulation via control voltage (CV), treating each stereo channel separately
• Seamless integration with Gatekeeper CV generator for parameter modulation
• Optimized for audio rate modulation
• State-of-the-art zero delay filter design with internal oversampling
• Supports VST2, VST3, AU, and AAX plugin formats on Windows 64-bit and macOS 10.13+ 64-bit
• 100% free download

Integration

Filtron is designed to be the ideal companion for Polyverse's Gatekeeper plugin, enabling modulation of Filtron's parameters via sidechain control voltage signals such as LFOs and envelopes. This allows complex and dynamic filter modulations in stereo.

Use Cases and Reception

Filtron is suitable for various sound design tasks including filter sweeps and adding character to drums, synths, guitars, and pads through its resonant filter and drive modes. It has received positive feedback from producers and reviewers for its combination of audio rate and stereo modulation capabilities, as well as for being a quality free plugin option.