you have a Melos Solid State Fuzzder FS-1 effects/stomp box unit. This is very rare and collectable. This one is in working condition, the bottom is missing. It sounds like a fuzz-face, much like any of the germanium era fuzz devices. Note the "Fender" look alike logo. I doubt they made more than one manufacturing run with that logo. Operates on a AA 1.5v battery. It has a volume control, a fuzz blend control, amplifier and intrument jacks, with a dpdt switch. Please ask any questions before bidding. I'll ship this w it needs to go, providing funds are made available before shipping. Contact me if you are outside of the continental US for details and cost of shipping. UNIT IS SOLD AS-IS. Thanks for looking and good luck! Contact me before paying with paypal so I can send you an invoice.