I purchased a Zen SE84B from Steve Deckert and I couldn't be more thrilled. I am stunned with what I hear: an amazing 3D soundstage and a musical presentation I've never experienced before. I find myself listening at much lower volume levels, because I'm hearing the detail now that I used to have to increase volume with my SS gear to hear. In short: Steve Deckert's amps are worth every penny and his 30-day money-back gurantee make it a no-brainer. Here's the caveat: I did have to look for more efficient speakers, however. My 88dB efficient N.E.A.R. 40Me's were too much for the amp so, I switched to some 90dB monitors. I hardly listen to my SS amp anymore. Also I've been experimenting with single drivers in modified old cabinets and a variety of super-efficient Eminence drivers designed for PA applications. I took my amp to a local hi-fi store and auditioned some used Klipsch KSP-400's which are 95dB efficient. Those speakers needed about 1/3 the gain I needed with my monitors. The folks at the shop wanted to know who made this little jem... A friend of mine is having stunning results running his Zen amp on 20-year old Klipsch Heresey's.