Allows for "ducking" specific frequencies based on an external signal, ideal for fitting a kick drum and bass together.

, which is a widely discussed and reviewed VST plugin used in professional audio production. Waves C6 Multiband Compressor Overview

: Widely used in live sound and studio environments to manage tonal balance on vocals, drums, and full mixes. Legitimate Ways to Get VSTs for Free

Understanding why this plugin is so popular helps you identify free tools with similar capabilities. The Waves C6 offers precise control by splitting your audio into multiple adjustable bands, allowing you to use different compression amounts on bass, mids, and highs within the same plugin. It features six bands, with two acting as "floating" bands for pinpoint dynamic equalization, useful for tasks like de-essing. Each band offers controls for threshold, ratio, attack, release, and gain, and includes a sidechain feature for frequency-selective ducking against other tracks (e.g., ducking bass frequencies against a kick drum).

: You'll need some VSTs. There are plenty of free VSTs available online, such as:

| Plugin Name | Developer | Bands | Mono Compatibility | Exclusive Feature | | :--- | :--- | :--- | :--- | :--- | | | Xfer | 1 (Full range) | Excellent | Classic Reese bass sound | | iZotope Ozone Imager (Free) | iZotope | 1 (with vectorscope) | Stereoize button | Visual feedback | | MSED | Voxengo | 1 (M/S encoder) | Perfect | Phase correlation meter |

Voxengo offers a free tier of various spectral processors. Soniformer approaches multiband dynamics by splitting the signal into 32 bands, offering unparalleled control over stereo width and compression.