You mean as amazingly good as the DSD DAC in the T+A D200 sounds?
This would have been my view a few years ago and prior to hearing the T+A DAC200 true 1 bit SDM discrete DAC play Redbook that has been upsampled to DSD256 on a PC. So I understand where you are coming from completely.
There are already thousands of DACs that “work out of the box” - the problem is after hearing the DAC200 in the optimal configuration these ordinary DACs will all sound similarly bad. If a “one box that just works“ mediocrity is what you value most then you have thousands of options….lucky you!
As far as I know, the Holo May is the only other DAC at the same/similar sound quality level as the DAC200 ……and the bad news is that Holo May needs a PC to upsample audio files to sound its very best too! So folks, there is a pattern here. There is a fundamental industry problem with upsampling/filtering on 99.9% of “single box DAC’s” and once you hear the better sound, there is no going back because the difference is mind blowing.
The good news for those of you who don’t have $5000+ to spend on a Holo May or T+A DAC200 is this: Upsampling redbook on a PC can make most DAC’s sound a bit better because the first 2x upsample seems to be the most critical or fundamental step as it is the first calculation that any SDM chip DAC will do.