Got my Streamer II+ today and I have to say it's quite the improvement over my Audinst MX1, which is obvious (although the MX1 is a great and affordable product in its own right). Better soundstaging and detail retrieval are the most obvious improvements. I don't really believe in burning in circuits, but I'll post again after I've let the Streamer II+ run in for a while. So far, though, I'm definitely satisfied - no, impressed.
Interesting. I recommended the base Streamer II to a Head-Fier a month or so ago, and he replied that the MX1 was cheaper and he had read reviews which claimed in to was an improvement on the HRT product. I guess we all have different ears, but I am still very happy with the way the Streamer works with ALL of my music, not merely the percentage which has been brilliantly performed, recorded and ripped straight to lossless.