Thats the TWA Little Dipper... Its an envelope filter, looks really cool, especially when the lights pulse
That's nothing you gotta see the Boss GT-10 when it's all lit up. You don't do outdoor concert at night with a GT-10 because all the air-planes passing by think your pedal board is an emergency air strip. When I go out to a gig I always put my GT on the roof of my car, With all those blue and red lights flashing every pulls over and lets me pass ???