Something Similar to Boss PH-2

[Aentons]

There is also the Moog MF-103 12 stage phaser. It will do 8 or 12 and it looks like they all modulate.

Here is the schematic for it:
https://www.synthxl.com/wp-content/uploads/2020/04/Moog-MF-103-Schematics.pdf

However, I don't think anyone has a diy project for this... yet

Holy crap! That's the real schematic isn't it!? Any chance they have the mf102 schematic as well?

why yes... yes it is...

That site has them all... and now I have them all... (maniacal laugh goes here)

[Zerro]

Maybe you would like to play around this beastie, I digged out from my bear-hole. Minimally for an inspiration :@)