The Ibanez TS9DX Turbo Tube Screamer features the same circuitry as a TS9, with the addition of three new settings for increased low end crunch: +, Hot, and Turbo. These three additional settings paired with the original TS9 mode, afford players a flexible array of sounds that make the TS9DX one of the most versatile Tube Screamers in the whole lineup.