The Mu-Tron Bi-Phase is definitely one of the coolest pedals ever made. This is a really nice example from the early 1970's. The Bi-Phase comes as pictured with the original box, foot controller and three original...

This is a Maxon Blubber "Crying Baby Machine". Fortunately it sounds more like a wah-wah than a crying baby. The pedal is in very nice shape and it works fine and sounds very good.