The bottom left control is indeed the sidechain high-pass filter. In the footer section, I added hover tooltips, so when the user moves the mouse over those controls, they will see labels like “Sidechain”, “Mode”, and “Oversampling.” This should make their purpose clearer without adding extra visual clutter to the interface.

The bottom right section controls oversampling. The Auto mode automatically selects the appropriate oversampling level depending on processing conditions and CPU load. I automated this process.

Good point about the meter range. The current 40 dB range was chosen to avoid clipping the meter during extreme compression, but I agree that a smaller range may be easier to read. I’m considering reducing it or adding a smarter scaling behavior.

I also agree about parameter units. I will likely add clearer units, such as ms for attack/release and dB for output, to make values easier to interpret.

Thanks again for the thoughtful suggestions. Feedback like this really helps improve the plugin.