What type of filter is used for the split multiband crossover? The most common choices are Bessel, Butterworth or Linkwitz-Riley. There is no information about the slopes ect… Hope this is the Linkwitz-Riley at 24dB/oct but I suggest that the next version of the plugin will introduce a choice.
I can’t tell you what type other than that it would have to be minimum phase in order to cutdown on latency so that StudioRack can be used live and for tracking.