Focus Fidelity Filter Designer

[Focus Fidelity]

EDIT: Ahh I see that David has posted in the mean time. That clears my point about SAM...

Then David does not understand what SAM does. SAM is of course only possible with a Devialet amplifier (but I think Technics has a similar feature, LAPC). Only when a speaker has exceptional bass precision (some YG and Magico models comes to mind) you can get top results only with RC. Devialet has direct control over the bass driver with SAM. It is necessary with direct contact between amplifier and speaker for this to work but as @Vivialet says, SAM is not room correction.
Sweet Room is just a parametric equalizer and identical correction can be done in Roon or other players or indeed in Focus Fidelity. FF would do time correction in addition, but would not be able to match SAM.

I'm not recommending against using SAM with FF filters. Use SAM how you normally would just don't change the setup of it once you've started with room correction.