I see how you took the pic in B&W, so we can't see the the Top Secret ingredient, that is so magical and dangerous, Bjorn has to cover it with a special material. This material, which was still slightly molten when I opened my new PGC, saves us mere Homo Sapiens Sapiens from having our face(s) burned off due to said Top Secret Ingredient. Fortunately, my still molten PGC internals were firm enough so that only my eyebrows got singed. There is a reason we are not supposed to operate Bjorn's pedals with the back off! You have been warned!
Gunbarrel Guitars, Evidence Audio wires.