K-Whooms Free Synthetizer

A Versatile Synthesizer with Per-Note Control
K-Whooms is a free virtual synthesizer developed by Hansen Audio that combines a flexible synthesis engine with modern modulation tools. Designed to achieve powerful and defined “Fat Sounds” with just a few turns of the controls, this plugin stands out for its advanced expression support and visual customization.
Advanced Synthesis and Modulation
The heart of K-Whooms lies in its multi-oscillators and modulation matrix. It allows users to work with basic waveforms (sine, triangle, saw, and pulse) and expand them using up to 9 phases per oscillator, providing total control over detune and panorama to create wide, deep sounds.
Main Features
- Multi-Oscillators & Noise: Mix oscillators with up to 9 phases and noise generators (blue, white, and pink).
- Note Expression: Modulate pitch, volume, pan, or any other parameter on a per-note basis.
- Modulation Matrix: Features 8 modulation slots with sources like envelopes, two tempo-synced LFOs, and note expression routing.
- Filter Section: Offers 12 different filter types, including a classic Ladder filter.
- Step Sequencer: Built-in for creating complex rhythmic patterns.
- Integrated Effects: Includes simple distortion and stereo delay to polish sounds within the plugin.
Interface and Flexibility
The plugin is designed for a modern workflow, featuring a scalable GUI (from 100% to 200%) and parameter context menus for quick functions like showing automation tracks directly from the control.
Specifications and Compatibility
- Operating Systems: Available for Windows and Linux.
- Sample Rates: Supports 44.1kHz, 48kHz, 88.2kHz, and 96kHz.
Hansen Audio’s K-Whooms is more than just a sound generator; it is a robust synthesizer offering per-note expression tools that are hard to find in other free plugins, ideal for producers seeking precision and characterful sounds.





