Hasn't been the case for the Resonessence Mirus after 3 years. And it will be a game changer again once it has the new gen ESS chip retrofit board before the competition has a chance to build their version's I suppose you must choose your brands wisely.
I can't see software upgradable chipless DSD 1024 compatible DAC's going obsolete anytime soon either
What hasn't been the case? The Resonessence is simply an ESS DAC that does not even use more than one DAC chip and has op amps on the output. I am pretty sure the Lumin S1 with 4 parallel ESS DACS would likely kill it. Heck, your cheap 4490 DAC with discrete output stage and hand picked $3 clock beats it (that is what you said). The Resonessence will never be state of the art.....op amps? You have got to be kidding!!!! That is why you are selling/sold yours.....simply outdated and useless.
By the way, all chipless DSD DACs will sound different from each other (because of many things)....so again, what difference would it make if your manufacturer has a new version of software or hardware when another company may do better for less. DAC du jour, for sure.