Received my Snubway yesterday and listened last night.
After an hour and a half of listening without Snubway I plugged it in and listened for about 3 hours repeating a lot of the same recordings. This is only 1st impressions obviously, and with that said the opinion of the What's Best Forum member you quoted is quite different from my session. I do agree that connectivity is somewhat limited especially if you have several plug-in devices pre-existing. I'm not clear at this point if dynamics are increased as I have a very strong dynamic presence in my system and didn't focus in that area as well as if there is an increase in perceived volume.
What I did notice was an increased purity of treble tone, along with extended decay. This affect also was throughout the midrange with increased resolution of very fine detail. Don't really want to comment on bass reproduction because again at this early junction my serious attention was elsewhere, and secondly, I was listening to different tubes than my preferred for best bass definition. In general I didn't have any concerns with the full musical experience.
Overall the music last night was musical, and very involving.
LP