APU Software Loudness Compressor v2.4.1 WiN-BUBBiX

APU Software Loudness Compressor is a Windows dynamics effect for producers who want compression and expansion guided by perceived loudness. It supports LUFS and True Peak measurements rather than relying solely on the RMS or peak readings used by conventional compressors. Its loudness-based processing is designed to deliver transparent level control that relates more closely to how listeners hear changes in volume.

Instead of centering the workflow on threshold and ratio settings, the plugin lets you define source and target loudness ranges. It then compresses or expands the audio as needed to move between those ranges. This gives hobby producers and more experienced users a different approach to shaping dynamics when mixing or preparing finished tracks.

A learn mode can automatically set either the source or target range from the incoming audio, providing a practical starting point before manual adjustments. Windows versions include 32-bit and 64-bit VST3 and standalone options, plus 64-bit AAX. For FL Studio and Ableton Live users on Windows, VST3 is the relevant plugin format.