Is there such a thing as a FOREVER DAC/streamer?

Yeah the DAC we build.  30 pound separate power supply, 101D direct heated triode tubes, point-to-point wired, V-Capacitors, Audio Note resistors, Nichicon capacitors, AC filter chokes, R2R, etc.  Probably not one DAC manufacturer uses any of the parts in their DAC.  Reference sound that very few people have heard.

Happy Listening.

I would ask is there such a thing as a "forever" satisfied audiophile. I was watching a video on youtube about dacs by Thomas and he used the phrase "good enough". Although some dacs might provide more air, more bass, more this or that he described reaching a point that it doesn't matter because the sound you have now is so satisfying it is good enough. So in that case I say YES, there is a forever DAC and when you find it, just keep it. 

I believe Esoteric’s have firmware that can be updated.

I would say that for those 75 or older, a DAC bought today would likely be FOREVER.  Below that age it will become outdated.

@kota1

I have always found plateaus that I am really happy with for seven to ten years. Where I have no interest in upgrading… I don’t want to screw up the synergy created between all my components. I read The Absolute Sound and Stereophile… etc. but have no desire to upgrade… just enjoy my system.

Then for no obvious reason I get interested in upgrading one piece… the one I perceive to be the biggest opportunity. I never do less than 2x or 3x investment so it makes a significant difference. But that triggers upgrading many or most components… then interconnects and power cords, then vibration. Then I am happy as a clam for another 7 - 10 years.
 

Clams are happy? Why is that?