Doepfer A-137-1 Wave Multiplier I.

Be careful!  This module is very deep—65mm!  It won't fit in a skiff case.  It won't fit in a NiftyCase.  It will fit in only one row of an Arturia RackBrute 6U—the row where the bus board isn't located, the other row might be a possibility depending on precise alignment with the bus board.

That being said, the module's functionality is great, and you can really get a lot of character out of it with so many attenuated CV inputs.

It's $120 over at Thomann at the time of writing.