From the manufacturer;

This is a new overdrive pedal that I hand build. This is my new Signa Drive. This OD has so much tone it is unbelievable. The harmonics and note clarity just drip out of it. This is the best sounding OD that I have ever built. I would put this up against any OD at any price built by anyone. It took me along time to get this pedal where it is. I had a tone in my head and I have finally got it. This has a 3 way toggle switch that allows different clipping and gain structures. This can go from a clean boost all the way to a Marshall crunch and every thing in between. If you are looking for a very versatile OD this is it. I am very proud of this pedal.

This pedal is so good, it most likely will replace both the Tubeslammer and the Tubeslammer Deluxe!