What? Martin effect pedals? Yes, that's right! In 1989, Martin (as in C.F. Martin & Co. from Nazareth, PA) offered a line of effect pedals under the name "Stinger"—each with the Martin name proudly stamped on the underside.
These Martin-branded pedals were made in Japan by Aria, and although they actually sound pretty good, they were a tremendous flop. Martin's dealers were acoustic-oriented shops, and they simply didn't know how to sell them. After about 6 months, the project folded, and very few Martin Stingers actually made it out into the public.
The Stinger OD-30 functions very similarly to other two-knob overdrive pedals (like the boss OD-1), and it even has the sought-after JRC4558D op-amp on the inside. It is a dynamic, touch-sensitive overdrive that sounds especially good when you crank the "Level" control and push the front end of your tube amp. From there, "Drive" lets you adjust the amount of gain/clipping you get form the pedal.
This 1989 Martin Stinger OD-30 Overdrive shows some nicks, scratches, and signs of use, but it functions 100% as it should and it sounds fantastic. It's a great pedal to beef up your signal or stack with another drive pedal for an intensely saturated sound.