ftp://ftp.dbxpro.com/pub/PDFs/WhitePapers/Compression%20101.pdf
Must study this because the 266xl I got (for dirt cheap, admittedly) sounds like shit. Very clicky with short envelope settings. Even using as asidechain to duck the bass with the Kick the artefacts are too obvious. I want pump, but without the clicks. The unit imparts a muddy character, even in bypass mode.
One more chance then it’s up for sale. Maybe best to use software for this task.