@malatu I'm joining this thread late as it's been an incredibly busy few weeks for me with travel. To tack onto what @vonhelmholtz and @hickamore mention, the quality and synergy between the N200 and a chosen DAC rely largely on whether the DAC can take advantage of the source's clock either through Phased-Lock-Loop (PLL). and/or further reclock the signal (in this case encouraging the use of SPDIF interfaces), or whether USB is a better interface because the DACs clock is far superior to the source.
In most cases, even with good USB cables, I find USB to be noisy and more fatiguing. It can give the impression of added detail, but it's really the grittiness that simulates that, leading to fatigue. Often this is caused by the 5V of current that is running inside the USB cable, which SPDIF cables do not use.
The clock in the N200 is quite good. Definitely not at the level of the N20, but still better than many DACs on the market today. It is worth experimenting with both interfaces to see which brings the best synergy in your particular system.
Seeing that you settled on the Berkeley Alpha Series 2 DAC, it seems you will need to utilize a SPDIF cable that utilizes a coax RCA connector on the N200 end and a BNC connector on the DAC end. These are quite easy to find, and DH Labs D-750 can be built in this configuration.
Congratulations on your DAC purchase. I'm not sure we captured it, but what DAC are you replacing?