Used DAC choice: Schiit modi 2u for $69 vs. Peachtree DAC-iT?

Ok, a bit of an update.
I compared some lossless files vs. CD.
I cannot tell any differences now.

Here’s what I compared:

NO NOTICEABLE DIFFERENCE:
When the source is a lossless FLAC file, I *cannot* tell the difference between:
* Node 2i streaming lossless FLAC via its own DAC
vs.
* * Node 2i streaming lossless FLAC via Peachtree DAC
vs.
* Cambridge CXC transport via Peachtree DAC

So, one conclusion is that I bought a CD transport for nothing.
Another conclusion is that my system isn’t presently resolving enough.
Every piece of equipment involved is mid-fi (Adcom separates, mid-fi streamer, mid-fi transport, and mid-fi speakers) that I do not have equipment capable to expressing the differences between the FLAC vs. CD media.
Or, perhaps I am not aware of what to listen for. I tried many well recorded musical selections of different genres but I’m unable to make out real differences.

I'm in the process of putting a new system together, so I'm not making any changes to my sources. And I'll get a much better DAC at some point. So, perhaps revisiting this in time will reveal more.

Very interesting results there OP.

I will not enter the fray regarding comparison between full res file vs. CD playback as I have not streamed the former. However, knowing the direction you are going with system improvements, once you are there a better DAC for the CXC and Node 2i will make an improvement. 

Thanks Uber and Mesch. Regardless of whether there's a noticeable audio improvement between the file types (and perhaps some will offer their experiences) there is something nice about putting in a CD and having that artist's album as a natural boundary for listening.

The way many listen now, often, is to jump from track to track, artist to artist. That's fine — that's how I read a newspaper or just news in general. But I don't grab a novel, read two pages, then grab another novel. I stick with one for a long while.

So, the way a CD player operates for me is that it encourages me to stick with something for longer, and so a different kind of immersive experience with audio comes about, that way. It's not the same as the kind of qualitative listening we usually see on audiophile forums, but it's still directly related to the larger experience.

If you play CDs you didn't buy it for nothing. In my personal experience I can stream the same file over Qobuz and the sound is as good as the CD so I don't bother with CDs anymore plus the ones I have are ripped to a HDD. I like listening to the whole album as well. Another personal experience is unless the DAC is designed to have a sound signature, NOS R2R, Tubes, etc.. I can't really tell much if any difference between well implemented modern DACs. For instance the two DACs you're using are both Delta Sigma DAC's and probably use similar output filters so I know I would have a hard time differentiating between them.