Little is known about this Italian brand other than identical and/or similar units were sold as well under the brand names of Silversound, Goldsound, G.I.S., GUN, EF-EL, JEI and VOX. Presumably the factory behind all of these effects was Caldironi Musica (near Milan), which is widely unkown as well. But they have been the manufacturer for the well known Meazzi amps. Any additional information or clarification on that is highly appreciated.
02/15/2017: entire set of early Boss pedals for sale, all silver screw, mostly transparent switch, mostly boxed, many come with instructions too. For details please inquire: e-mail