Modded Ibanez TS9 Mod Plus Tube Screamer Guitar Effects Pedal

The original Ibanez Tube Screamer made history, and Keeley's TS9 Mod Plus will have you making tonal history of your own. Used by guitarists including The Edge (U2), Peter Frampton, Jon Herrington (Steely Dan), and Larry Crane (John Mellencamp band), the TS9 Mod Plus has a number of enhancements over the original that give it a sound closer to the Ibanez TS808 Tube Screamer.

Keeley Effects use the Texas Instruments RC4558P chip, just like early Ibanez TS808 Tube Screamers. Additional mods include replacing the carbon-composite output resistors with metal-film types that don't introduce noise to the signal and increasing the bass response for full low-end richness, and increasing the overdrive range. The result is a cleaner sound when turned down, twice the gain and drive when cranked, and stock TS808 sounds in between. The bypass circuitry was also improved, as well as the tone control circuit.