Audiophilepure

https://parttimeaudiophile.com/2019/10/13/dcs-bartok-dac-part-one-review/

“Another aspect of the device is the ability of software from dCS to upgrade the sound performance. There are firmware upgrades for the DAC every one-to-two-years, not unlike the DirectStream’s. I believe this is important as a $15K investment should be future-proofed to a large degree. It’s not a DAC where, every year, a new Sabre chip comes out and all of a sudden one has a nice “doorstop DAC” that is now dated. That gives me comfort.”