do i need a new DAC


i have a NAD D1050 which is now 5 years old but still sounds fantastic.  just upgraded my amp to the new Rega Brio 3.  was considering a Chord, Rega, or the new Audiolab MDAC+.  but i can't imagine it making much of a difference. for a DAC that is 5 years old the little NAD is holding up well?  what has happen in the last 5 years?  have their really been such great strides in digital playback made? i think SS is evolving faster.  any suggestions?
thanks,
128x128jag
Post removed 
06-24-2018 12:59pm Still thinking over a Rega dac-r, a gungnir, a chord mojo, a couple models from teac. I'll use a mac mini I just got and a seagate personal cloud NAS. Not sure if I need DSD. I don't understand the technical aspects of it. If a dac can receive a signal at any current format frequency and decode it, how come it can't do it if it's streamed? How does the dac even know it's streamed? Doesn't the music player pull the signal into its memory and send it from the ram anyway? (I'm planning on using software that does that). And do I even care? That is, is DSD really the future? I've read such positive things about the rega and the gungnir but they don't do DSD.
Plex Lucky Patcher Kodi

On a similar search and I'm inclined to Chord. In your case if you only need a DAC, go for the Qutest, said to be the same as the Mojo2, but no pre amp, headphone input. IThe Mojo more for mobile headphone users, not a home HiFi. When I demo'd the Qutest, sounded much better than my ageing Ayre QB9. It is about £800 cheaper than the Mojo, as your not paying for stuff you don't need.

You can also add on an aftermarket power supply, though a lot of argument if it is necessary. The legendary designer of the Qutest, claims they make no difference.

The Chord Qutest is said to be equivalent to the Hugo 2, not the Mojo. Good choice if you don't need portability, headphone amp.