Hello,
I appreciate everyone’s thoughtful feedback. Thiefoflight that is a spot-on question. I had a weird problem happen. I was having trouble with the volume going high enough and it sounded muted The source of it turned out to be the iPhone from which I was streaming the Tidal to the Bluesound Node. I found out that my sound improved enormously when I replaced the iPhone 6 plus with a 7 plus.on the old phone. Not fathoming it could be the source I assumed it was the passive not providing enough gain. I just so happened to discover this because I smashed the iPhone 6 and needed to get a new one. This had been going on for weeks and just replaced the phone two days ago.
I never would have thought about getting one had the problem with the phone never occurred. It sounds awesome again now. But since I got the bug in my head about the potential to get it even better I’m still pondering the value of adding the tube preamp.