I own an original SD-9 from back when they were under Ibanez. It's the greatest distortion/overdrive pedal I've ever heard or owned. Anyone thinking it's just a rip off of the TS-9 is misinformed. It's got everything the TS-9 has and more! I've played through one of these new ones and from what I can tell they're pretty close to the originals. It sounds killer as the battery gets a little older. If you've got a "pedal power" supply try it with the power dim on it. Good stuff. In my experience it sounds best through a Marshall or a Mesa. It sounded good through a Fender but not nearly as good as the other two.

Pretty basic and standard which is just right.

I've put my original through hell and it's still fine.