Last night I further experimented with my EtherRegen and Muon Streaming System going into my Tambaqui DAC.
I first removed both and went direct ethernet (from my Silent Angel switch). The sound definitely became smaller and harsher. Then I put in only the Muon system and I was rewarded with more spacious and smoother sound. Then (hoping I no longer needed the EtherRegen), I placed the ER in between the line in and the Muon, using the A side to B side moat. Another definite but less intense improvement. Sounds became smoother again and more open and enjoyable.
Also to note using the Network Acoustics other ethernet cable (the System includes it) makes a difference as well.
So to me and my ears, both add quite a bit! I can more easily hear differences when I take away something vs adding something. I think the ear can tell what it is missing more than what it wants!
I like the song Liberty to try these tests. Using a fairly high volume, there is so much opportunity for air, space, tone, female voice and especially the piano. At around 3 minutes, her voice and the high piano notes can be amazing or a little harsh. Sublime with the filter and ER into my Tambaqui DAC; the piano notes float in the air.