Hey all, Well back a few weeks ago I picked up an STF-2. I use it in conjunction with a Pioneer VSX-1014 and Athena F2's B1's and a C1. When I first set it up, I must say I was thoroughly satisfied, but let me tell you that I just calibrated it properly, and it is truly unbelievable!It's not as much the loudness (Even thought the loudness seems never-ending) but how clear, precise and accurate it is, it is really stunning. I have to say that a sub is a very if not the most important piece to balance your home theater puzzle out, and this just adds an incredible dimension that nothing in that price range can compete with, im my opinion of course. If anyone is in the market for sub supremacy and their budget is around $400 to $500, the HSU STF-2 is the sub for you! Anyone else have one and care to share their opinion?