DAC Comparison - Aurender A200 vs McIntosh C2600

This is a long shot, but I will ask anyway because it seems somebody somewhere has already investigated just about everything........

Has anyone done any critical listening to compare the DAC inside the Aurender A200 vs the McIntosh C2600?

I recently purchased an Aurender A200 streamer and I am using the DAC inside this unit. My system features a McIntosh C2600 tube preamplifier that has its own internal DAC and I am wondering if one DAC is noticeably better than the other, or if anyone has listened to them both.  I tried to do some comparative listening to them both yesterday but it appears I will need to do some firmware updates to my McIntosh before I can do this - hence this post and question.

Thanks from an old analog guy trying to learn the digital streaming world.