Boss SD-1 SUPER OverDrive "Black label" - JRC 4558DD
Boss SD-1 SUPER OverDrive "Black label"
Early version, ca. mid 80s Boss SD-1 Super Overdrive, "Black Label" and Made in Japan with the desirable JRC 4558DD chip. Smooth overdrive and great as a booster. Has some cosmetical wear but works and sounds great.