oups...
1. the franca lingua 2023 is English... please update... sorry about that (I'm French too

)
2. all this process seems tricky... => cal thru MA1... etc
I'd like to know what's the diff in SQ between
a. this "top-notch" process thru MA1
b. and a basic process, ahead, at source level, simply using a UMIK mic => basic & free process using : REW for measurement, and then, rePhase to fix the up/down on the curve
3. i your signature, you mention => NEUMANN MT48
@ =>
https://www.musicmatos.com/5743-interfaces-audio-usb-neumann-mt48.html they give the price => oups !
Can you explain how this interface performs ?... at such a price !?
Rgds