What are you using as a streamer? Constructive feedback please.

@scthom - sorry, been out of touch for a couple of days.  To your question on the M3 vs the AM Tubadour III SE - both are great DACs.   Overall neutral presentation and musical overall, which is to say nothing in their presentation is prominent.  A coherent presentation of the music by both DACs.  Good meat on the bones - not a thin presentation or overly clinical like some DACs.  Highly resolving, good soundstage. The Bricasti has a touch faster/harder attack than the AM. Both could be considered endgame DACs by many.  I've principally used the M3 via the internal network card, and I don't really recall its sound via other inputs.  I've principally used the AM via the USB input (recommended by Vlad along with the I2S).  I use my Auralic G2 as the source for the AM.  As a DAC on its own, the AM is the better deal, and if you principally use single-ended, I would go with the AM.  The Bricasti has balanced outputs and also a decent analog volume control.  Of course, when you consider I am using a streamer more expensive than the AM, the prices of the sets of streamer and DAC are more equivalent and slightly favors the Bricasti.  Both are great DACs and I feel no need to upgrade.

I started with Bluesound Node 2i and am generally happy with it. I upgraded it with an external power supply mod to take the AC out of the chassis -  makes a difference.  On my main systems, I upgraded to an Auralic Aries G2 using wireless driving my Audiomirror Tubadour SE DAC.  I also use a Bricasti M3 DAC with the network streamer option fed by ethernet on the other high-end system.  Right now I am in my office listening to the Bluesound Node 2i (w/ upgrade) with the Schiit Bifrost 2 DAC.  Sounds great.  I have found I am very sensitive to digital glare, and all of my systems are at a place now where that isn't a problem for me.

@pdreher - yes, I did.  Both the Bricasti and Auralic showed improvements.  Probably the best bang for the buck is the Bricasti network option at a $1000 add-on (but you do need software to stream to - MCAST is free; I use Roon on a SGC i5 server).  As the Bricasti has a large onboard cache, it seems to be invariant to the server with respect to sound quality.  (That said, a filter such as the Network Acoustics ENO does seem to improve the sound slightly by decreasing electric noise to the unit.)  The Auralic is also better than the Bluesound, including the Bluesound with the power supply upgrade.  Just a little more detail and soundstage.  The Auralic software also sounds better than Roon using the Auralic as an endpoint.  I also like the screen the Auralic has as well as options to upsample and use different filters.  All small improvements.  

All that said, the Bluesound with the upgrade is really quite good and I believe a great value, esp given the included software ecosystem.  You might be able to do better with a Pi based DIY solution, but that may not appeal to everyone.  If you told me I could only stream the Bluesound and never use anything better, well I wouldn't be too upset.  I think the Bluesound is a great entry point for those who want to stream, and for many could be an endpoint.