DAC's Streamer and Preamps

I like this post from today comparing the Yggi+ OG with the new Byggi,
Schiit Yggdrasil Impressions thread | Page 963 | Headphone Reviews and Discussion - Head-Fi.org

In my experience separates are the way to go.  That way you can change or upgrade over time. Especially if you’re like me and enjoy tweaking your system and also trying out the latest and greatest equipment.  On the other hand.  If you don’t like tinkering and want to just get it and forget it, go with an all-in-one setup.  

Generally- separates perform better by isolating noisy circuits from each other, and future upgrades easier to replace a single function component. However, it’s costlier with more casework and cabling.  Digital continues to evolve rapidly vs analog - a good reason for separates.

DAC with volume control- Generally, one can run the DAC without a preamp, but a preamp will usually make it sound better (more engaging, realistic…). 

But, there may be exceptions.  I moved from a separate steamer and DAC to a streamer/DAC because a used Linn DSM/2 w Organik DAC was a fantastic sonic bargain in the realm of top DACs.  I also moved from a separate preamp and amp to an integrated because the Audionet Humboldt offered reference top Sonics but within my budget.

Some brands make incredible all in one units, Lumin is one of them.  Streamer, DAC combos at various price points. All are great, have built in digital volume control.  If you plan keeping a combo unit for awhile, don’t really like to tweak things, great option.  From a flexibility standpoint, separates are the way to go, allows you to swap out DAC’s, easier to tweak, make changes.  So many options, depends on your budget and sound preference, matching gear.  Ability to replace a pre with a DAC / Streamer with volume control is really system dependent, works well with some amps / speakers but with others a Pre will generally make a noticeable improvement.  Schitt, Lumin, T&A, LTA (Areo), PS Audio, Chord all make great DAC’s with different design philosophies, R2R, Tube, FPGA, Chips.  Used is a great way to get more bang for your buck, good luck. 

I subscribe to the advice that a higher end system will benefit from a separate pre but not necessarily a separate DAC and streamer.  However, since I have not seriously looked at upgrading components for the last two years, I am not real familiar with the more recent all-in-one boxes.  I know there has been a big focus on volume control which has been a weakness in the past.  Especially if one is only streaming there is no question this option could provide the best value.  You should certainly consider it and let your ears and wallet be your guide.  I think the traditional "separates are always better" logic is simply not valid for everyone.