The problem of implementing mono/stereo plugins in a multichannel project has been documented and discussed for years with no solutions offered by Steinberg.Unfortunately, there’s a few more conclusions I’ll take from the discussion: Steinberg might want to modify this to read, “any compliant VST 3 plug-in features multi-channel support and can…” I conclude from this that the Cubase Operation Manual is in error, being that it is incorrect to say that “any” VST3 plugin will support multichannel audio.