i love it! i run it thru the fx loop on a gk head--i am going to try and skip the gk pre and go straight in to the power section now that i know that it won't bypass the di out. i have found it very useful to turn the direct gain to 0 to clearly hear what is being filtered. then bring it back in. what i would really love is a shallow 1U rack case for it so i can bring it everywhere instead of having it racked up with a head. i may just have to build one. the sf-2 brings real presence to your sound and (maybe this is my imagination) allows you to optimize the cabs you use. getting the most out of them. one day i will have an f1-x and a power amp too and just use that.
