If I remember correctly, Butch Vig and Billy Corgan half-jokingly said the Mutron Biphase was their secret weapon when recording Siamese Dream.
-- farkas

Yep, I think I remember seeing the same interview some time ago. And the Biphase is definitely something Butch Vig would glom onto. In fact, I don't even see a regular version of it on Reverb, just a reissue for $670-ish. But they DO have a hyper-rare Mu-tron 3X modulation filter/effect pedal there for only...ok, get the oxygen ready...

...

...

...$20,000.