Source Code Overdrive

OVERDRIVE

Susumu Tamura, the creator of the legendary Ibanez TS808 Tube Screamer, originally designed it to rival the Boss OD-1 — and his innovative soft-clip overdrive circuit went on to become one of the most copied and celebrated guitar effects ever made. Revered for its smooth, tube-like tone and midrange clarity, the “808” shaped the sound of countless players, including blues legend Stevie Ray Vaughan. Now, Tamura brings his five decades of expertise full circle with the TWA Source Code — the ultimate evolution of the Tube Screamer. Since 2021, he has refined every element of his iconic design, creating a next-generation overdrive that honors the classic “green box” while expanding its tonal versatility for the modern guitarist.