The Mosferatu was one of Hermida's first pedals which laid the groundwork for the Zendrive. Two channels of overdrive/distortion (one side is slightly hotter than the other). You can run each side separate or stack them on top of each other. The pedal works perfectly and is in great condition with only minor scratches.
Quoted from Six String Soul interview met Alfonso Hermida.
Alfonso Hermida, Engineer for Hermida Audio, has gained fame in the world of boutique effects pedals since the release of the Mosferatu and Zen Drive overdrive pedals. The Mosferatu, his original signature pedal, is revered by users for it’s thick tone and long sustain. In this interview, Alf gives readers a bit more insight into his life, passion, designs, and how the Mosferatu can save the world.