I thought some others might chime in here on the synergy between the two units. I only have experience with the DAC 200. At anywhere near its price range, it was the best I heard. I’m sure others may have a different view. However, for me, musicality, dynamics, resolution, tonality were best in this class, and particularly so with native DSD.
While I’m sure the synergy between it and the MP 200 is good, the DAC works well with other streamers. I used an Auralic Aries G2 (and a Sirius processor) to convert and upsample to native DSD 512 which was particularly good. But the DAC is very good with PCM, too.
I tried AES/EBU and USB both to great effect. If your streamers clocking is very good, you might prefer the former. I found a touch more resolution via USB - and it allowed me higher sampling rates.
It just so happens that I’m selling my DAC 200 as I went upstream to the T+A SDV 3100 in my primary system and just recently acquired the SD 3100 (no preamp) for my 2nd system where i was going to use the DAC 200. And a deal too good to pass up came my way. That’s how good I believe the T+A stuff is. I found no deficiency with the DAC 200 whatsoever. So, I was going to have my T+A dealer sell it for me - and i can point you to him. Or, we could make separate arrangements if you prefer.
Outside of my unit being available, I hope the above helps.
Best,