Doug:
Yes it works, and I still have it, and use it. When I got it the first time, my system was sounding like a little bit fuzzy, dull, opaque, of course I did not noticed that, as this is a gradual process, I just get it for curiosity, and after played it two times, one on the CD player and one on the DVD player, the sound became cleaner, more transparent, the hights were more crisp and the bass was deeper and tight, after that I have been playing it as a regular basis once a week or so, ( they recomended once a month IIRC, but not with our use, or abuse or the music) but definitelly it worked for me the first time, wonderful, it was the second time a tweak have worked for me, after the I replaced the original crappy IC that came with the equipments for the ones I have now....I was tryig to get a link for you to get it, but I was not able to get it, it is out of print and most of the times sold out, if you want to try it, I can send you a copy (just PM me if you are interested in trying it free of charge)