Ibanez TS9DX Turbo Tube Screamer Overdrive Pedal For more than a quarter century, the Tubescreamer has captivated players as the first name in overdrive pedals. With a distinctive sound and high quality construction, the Tubescreamer is the pedal the legends love. Ibanez continues to set the standard with all its compact effects pedals. The Ibanez TS9DX Turbo Tube Screamer Effects Pedal features the same circuit as a TS9 Tube Screamer and also offers 3 new settings for increased low end crunch: +, Hot, and Turbo.