1983 Ibanez ST9

This is a vintage 1983 Ibanez ST9 Super Tube Screamer electric guitar effects pedal. With (2) JRC4588D chips, this overdrive pedal effectively sports double the gain of a typical TS9 Tube Screamer effects unit. Rather rare, and quite desirable, the ST9 possesses much more harmonic richness and warmth than a TS9. This example, serial number 403316, is in very good all original cosmetic condition.