Mine has now been on for a solid 100+ hours, and streaming music for about 30 hours. I'll defer to Dusty over how many hours of burn in are needed for the DAC to be in its 'happy place', but I like to give my components a good 100 hours of use before I make critical observations. [Simply being on doesn't count in my book.]
Considering I got in at the early bird special price of $1495, I'm quite satisfied with what I have. I got two or three pieces for the price of one. I got a nice sounding DAC, a streamer, and <what shall I call it?> a 'junction box' into which I can attach thumb drives and hard drives filled with music, a CDT, and ????. So far, I have used it solely to stream TIDAL, but I've got a HD with a bunch of music on it that is attracting my attention.
During the first dozen hours, I noticed some sibilance in some female voices and trumpet music, but I think I've heard this through every new DAC and preamp, so it's nothing to worry about. Just this morning, I listened to Seven Steps to Heaven by Miles Davis, and everything sounded pretty good.
This is my first streamer, so I cannot compare it to any other. The GUI is new to me, and it's the first rendition of it (I believe). It's not as smooth to navigate as TIDAL's GUI, but I know Dusty is working on it. I have not compared the internal DAC to my other DACs. That will come later.
I'm delighted that I no longer need to have a computer tethered to my DAC.
That's all for now.