According to their web site "The Flex Drive is our most versatile overdrive of the bunch. This was our attempt to achieve the Malcolm sound which is one of our favorite rhythm tones ever. However, the Flex Drive will get you all the way to VH-2 which happens to be one of our favorite lead tones ever. Luckily enough all of the tones in between can achieve amazing blues and country tones as well, that’s why we call it the Flex Drive. This is just an incredible tool for studio and live performances.
There is also a video demonstration on their site. I must say it sounds pretty darn good.
The pedal retails for $189.00
More info can be found at http://www.rockettpedals.com