Audyssey SEQ is the Sound Equalizer or "Sound EQ"
I presume Audyssey SEQ is a nick name for the free-standing 8 channel Sound Equalizer. I have had one for over a year. I thought I had a pretty good system until I tried it. It's amazing. If you are a casual listener and have a decent system, it's probably not worth the investment. But, if you want your sound to be impeccable ... and I mean flawless, you will enjoy it. The reviewers that say it's the best thing to come along in a long time (since the advent of stereo?) are right. I've been fooling with stereo and home theater and building my own speakers for 40 years and this thing blew me away. If you listen intently to your material, wanting to hear ever detail, having sounds come from where they should (in, say, an orchestra), then you will like the Sound EQ. I have Klipsch Reference 7 speakers and thought they were pretty good, but didn't realize what the room was doing to the sound until I got the Sound EQ. Last night watching U571 (testing a new subwoofer) I heard noises that weren't coming from any speaker. They came, for instance, from a point between the left main and the left surround. I'd read that the room correction this thing offers would do that and it sure does. Listening to 5 channel movies with well done 5 channel sound tracks is a whole new experience. Oh, and one other thing. I'd always had problems locating my subwoofer so that it would blend well with the mains rather than be identified as a separate sound source by my ears. Now I can put the subs most anywhere and they don't stand out as subs, the lows are just there where they belong. Oh,and one more thing. I no longer have to ask my wife "what did he say." Voices coming through the center channel are clearer (older ears .... mine are 66 .... don't distinguish between background sound and the voice nearly as well as younger ears and having a crystal clear voice from the center channel helps that a lot.