The Dequantizer module looks like it's another one affected by "first run syndrome," meaning you will get a different result if it is the first time Stereo Tool is being run in a DAW session. Once something like 30 seconds of audio has been processed through it, the result will be more intense. Unfortunately, it does not appear that "priming" will solve this (i.e., tacking 30 seconds of audio to the front of the track), as this appears to affect the entire
track. In other words, a SEPARATE track at least 30 seconds long will have to be processed through Stereo Tool first, BEFORE processing the track you want the Dequantizer to affect, WITHOUT closing out of your DAW session or resetting Stereo Tool if batch processing (which isn't possible in hosts like foobar2000).
To reproduce, open the following track in Audacity:
Run only Dequantizer in Stereo Tool with the bottom two quality sliders maxed (other settings default). Save the track and take a spectrogram. Use IrfanView
or an image editor to bump up the contrast if necessary. I used "Fakin' the Funk
" to make the spectrograms, and used IfranView's "Image" -> "Enhance Colors..." -> Contrast: -77, Saturation: 167".
Now undo in Audacity, then re-run Stereo Tool with the same settings for Dequantizer. Again, save the track and take a spectrogram, and compare the two.