Hi AfterImage,
Basically the RWA-Z1ES leve 3 is a sensational sounding source. I have had a lot of DAC/Server combo's in the past and this one is my favorite in sound quality and function. For reference I have owned the Bryston combo, The Lampizator Big 6/mac book, modded Mac Mini/RWA Isabella DAC, Mac Mini/Tranquility DAC SE, Wyred4sound server Mytec DAC, PSA Perfect Wave II server/ DAC and some others. To be fair I know my system better now and may have it optimized better at this time to get the most of what the RWA-Z1ES Level 3.
Thanks for your post and providing your Level 3 impressions! I'm really pleased to read that it has become your favorite source to date, and
I hope it continues to be for a long time.

it would be nice if you could update us every 3 weeks or every month to see that your enthusiasm has remained the same. when your really satisfied with the sound - all you can do is listen and enjoy music
+1 Smargo! This will be helpful to me as well, because my goal with the RWA-Z1ES-3 is to make is a source that one can enjoy for the long term, and one that will hang in there with some of the best (and more costly) solutions. I'm very proud of it, and enjoy listening to it every day.
It keeps me glued to my seat and playing all types of music at all different file types (DSD, 24/194, Redbook, Internet Radio, etc) and I don't have to think about software, computer optimizations, etc. I just relax, listen, and enjoy and I hope this is what happens for all my customers who go this route.
to me thats very confronting - because im so used to tinkering and and obsessing about the equipment that i have - that sometimes i lose sight of the music that can give me great emotional joy.
That's just it! The only tinkering that I've been doing with it, once is a while, is trying a different set of tubes. Right now, its those E88CC Telefunken's that Upscale Audio got a new-in-box stash of. LOVE 'EM in this player!!!
And I'll be downloading more music this weekend, too.

Thanks again for all your posts and interest here!
Have a good weekend,
Vinnie