Zvex Effects Fuzz Factory "USA Vexter Series"The Vexter Fuzz Factory is identical in construction to the newest hand painted Fuzz Factories, including a DC power jack and on off LED indicator. Because it is hand silk screened instead of hand painted, we are able to offer it at a somewhat reduced price!_This is a five knob fuzz using two new old stock sixties germanium transistors. The circuit is not modeled after any classic fuzz design, but should have been around when Leary was still lucid.