FabFilter User Forum
Mono/Stereo Versions
There's no harm in using the stereo versions, but the mono versions use 50% of the CPU (since they only have to process one channel) and omit panning controls etc, making them more straightforward to use on mono sources.
Cheers,
Frederik (FabFilter) — Aug 9, 2012
Is there any major benefit to using a Mono instance of Pro-Q/Pro-C on a mono source?
I only ask as I have a project where I used stereo versions on mono sources and may swap them over to the mono version but its a bit of work.
Do the stereo versions process as Dual Mono? I presume if they do then there is not so much of a need to switch?
Thanks