It's not really a fair comparison until you get a decent dedicated streamer. The renderer module from MSB is quite good for the price tag.
You would probably need a streamer the quality level of the Innuos Pulse, Aurender N200, etc. to make a fair comparison.
The streamers make a big difference. We carry MSB, so I'm familiar with their renderer module, but I have never compared the DAC1 to the Discrete DAC. I have vs the Premier DAC and the DAC1 holds it ground vs the Premier DAC, but the Premier DAC is better in every facet of comparison.