I have impressions of very limited usefulness later in this thread. While I do feel it tightened the bass and made it more neutral-sounding, it's hard for me to recommend it to people as it exists currently. I would personally prefer to have a unit with balanced XLR connections and the ability to EQ four subwoofers independently. I also want to be able to do the calibration without needing a computer hooked up to it. I hope they're working on a follow-up version, as I like the general idea of what they're offering.