Dod Deep Freeze. Much like the Dod Ice Box however it's frequencies are tuned for bass guitar. Very rich low end unlike many chorus pedals that suck low end or make it really muddy. Only made for a year in the 90s and becoming increasingly hard to find these days. A collector might be interested aswell as a player looking for a better chorus pedal. I sold one to my guitarist because he really liked the sound. Cheers