Let me preface with… I did not know this.
That said, would it be noticeable? (Aside from levels)
Scenario 1) stereo signal → stereo blocks → output 1
Scenario 2) mono signal → mono blocks → output 1
Scenario 3) stereo signal-> stereo blocks → out 1/2 st
Scenario 4) mono signal → stereo blocks-> out 1/2 st
Would there be a discernible difference between scenario 1 & 2? Or 3 &4? Lets assume source signal is a steady tone (simple piano).
Edit- ive done mono vs stereo experiments using logic and noticed no difference in sound when comparing hard panned L or R stereo to the panned L or R mono. Only when using stereo R & L combined does say a basic reverb come to life. Night and day.