Check out the above videos of the Doepfer A-101-3 Phaser. I’m not going to pretend that I understand how it works or even how to patch it. It sounds pretty sick though. $425 USD.
“Module A-101-3 is a 12 stage phase shifter with vactrols as phase shifting elements. Our design offers access to each of the 12 input and output stages leading to a lot of new filters that cannot be obtained in other ways. Especially the free patchable feedback loops.” – doepfer.de
For more info: doepfer.de/A1013