Anyone tried the SOS Subwoofer Optimizer System

I purchased and SOS system yesterday from a local dealer in Mobile, AL who claimed the SOS would improve my bass response. He said that if I didn't like it, I could bring it back, so I took it home. I currently own a servo-15, but have been unable to integrate it into my system without it dominating everything. After a few minutes of calibrating my system, the SOS was inplace. All I can say is the dealer was right. My subwoofer sounds like a million dollars, bass is a whole lot tighter. I now have serious slam, without all the low end distortion. I wonder if anyone else has seen the same results from this thing.