It's a fun pedal....I've got one here somewhere....not my first choice
It's not natural or subtle, but is a lot more usable than the original. It has teh same signature sound, the peircing mid is still there. Not as harsh, but still pretty cutting.
I find that it's still not a very transparent pedal, and it still doesn't respond too well to playing dynamics.
There's the downside, on a plus, if you can get it to work with your setup it sounds huge, that is if you like the Metalzone type of sound - ie that sharp midrange peak. It is much improved on stock, less noisy, better tone control and more range. But it'
Hope that helps!s not a Tube Factor (which I once owned and kind of regret getting rid of!)