The Ibanez TS9 Tube Screamer is a reissue that's just like the original in so many ways. Same housing, same famous seasick-green paint, and the same crankin' overdrive that made the original one of the all-time classic pedals. Guitar Player called it the best. Plug it in. Crank it up. You'll hear what all the fuss is about. Tone, drive, and level controls.
•Drive, Tone and Level controls •Power Supply: One 9 volt battery (006P) or external AC adapter (Use only DC 9V (Negative center pin))
source: www.ibanez.com