Outside says Bros; I can't find that much information on the unit. The box it came in (owner said it was the original box) was from Westfalia Technica. On the inside it is shown to be a Sound City phase shifter; pictures confirm this, the units are alike.
The phaser is pretty different from the others I own. On the lowest depth settings it is a very subtle phaser; with the depth to the max it is more an auto-wah kind of effect with a very vocal phase shift. Very study box!!