Outboard Dac for Bluesound Nano

Bet. uDac and Ares, uDac is a no brainer (unless you raised your budget to Pontus 15th.)  I am the owner and, if you care for better SS (especially height and depth) and much lower output impedance like I do, I definitely endorse uDac.

Also, two suggestions: (1) add Ultra module to Sbooter LPS and you attain much lower ripple noise performance (two Agers report positive experience) and (2) add a capable DDC such as Singxer SU-6, Holo Red or Gustard U18 to bring Nano to the next level to be possibly comparable to Icon.  Don’t get me wrong.  Namo is a high performer but I don’t believe it has galvanic isolated USB output.  Best wishes.

Looks like you are doing a great job of building on your speakers and amp as a base. To get each component of similar caliber and fidelity I would recommend finding a used Schiit Yggdrasil (1st choice),  Holo Audio, or Denafrips or new if you can save up. You want to reach as high as you can. Then after recovering financially you can replace the Bluesound streamer with a more capable one... and it is likely you will have a very well balanced capable system., 

Not sure why no one talks about Pegasus II here. But check out the reviews. 

I just added a LTA Aero to my Blusound Vault. Well, I ordered it, should be here in a few days.

What specific improvements/sound characteristics are you looking for?  Are you open to buying used?