This TS-9 Tube Screamer is modified by Monte Allums (http://www.monteallums.com/pedal_mods.html) and has the Burr-Brown OP AMP chip installed. The mod really brings out a great tone compared to the stock Ibanez TS-9.

Same crankin' overdrive that made the original one of the all-time classic pedals. Plug it in. Crank it up. You'll hear what all the fuss is about. Tone, drive, and level controls.

In like-new condition!