I am very, very pleased
I am very, very pleased with the upgrades Warren did on my Yamaha HS8's. As Warren states on his site, the mids and high end are much clearer and the low end is still very present, but no mud like it was before. These speakers are very usable now for mixing and mastering. If was to upgrade, I would need to go to a pair of 3-way speakers in the $5000-$20,000 range, but I won't for some time now that I have these. BACKGROUND: I've been working in studios since the early 90's as a producer and session player. I've heard and worked with many sets of speakers over the years.
My only complaint was my experience with FedEx. It ended up costing much more than they originally stated and when I tried to call corporate support to complain, their support actually hung up on me. I won't ever use FedEx again. But of course, none of that had anything to do with Warren.