4-PIN, PC-MOUNT, JALCO STYLE STEREO PHONE JACK WITH TIP SHUNT Fits many Marshall, Korg, Ibanez, and Casio instruments, including the Casio Privia, the Ensoniq SQ-1, SQ-2, SQ-R, ESQ-1, and ESQ-M synths, and the Ibanez Super Metal (SML) stomp box.