Sub Generator: Low-End Enhancer Plugin by Denise Audio Free Download

The graph lets you fine-tune the frequency or note of the generated sub while you work, so it can match the key or the fundamental of your source. An adaptive mode makes the sub respond dynamically to the music rather than staying fixed.

Rise and fall controls set the attack and release of the sub, so you can shape how quickly it arrives and how long it lingers. Together these controls cover the basic job of adding weight to a kick, a bassline or a sound that feels thin in the low end.

Beyond adding sub, the plugin can cut existing low-frequency information and replace it with a tighter, more controlled bottom end. This is useful when a recording has muddy or inconsistent low frequencies, such as distant microphone recordings for drums or vocals.

The interface is resizable and includes a side-chain control, so the sub can be keyed to another signal in the mix. The developer also notes that it can be used as a stand-alone sub source.