Is it worth replacing a Lumin D2 with an Eversolo dmp-a6 Master Edition?

Congrats on the new DAC.While I haven’t heard the T+A DAC, I understand it is very, very good - particularly for the price point. Please let us know how you like it.

I’m not familiar with the streamer you are considering but want to offer a few thoughts. My own experience suggests you will be well rewarded by pairing your very high quality DAC with a streamer of at least similar quality (and unfortunately, expense). 

For me (YMMV), going to a higher quality streamer made an even bigger difference than going to a higher quality DAC. Some will disagree, but there are plenty on these forums who have similar experience. There are readily audible differences as you go up the chain.

I suspect you would be pleasantly surprised by auditioning the Aurender N200 (or even N20 if your budget can stretch).. Auralic is also coming out w/ an upgraded version of their Aries G2.x streamer (and G3). The GRIMM MU1 (I’ve heard it - and it is very good). There are many others which I haven’t heard. Perhaps the matching T+A unit would be a good solution. 

Of course, you might find in your system that the DAC 200 negates the need for a higher quality streamer. So, an audition is a must. But I suspect, given such a high quality DAC, you could be in for a real treat going upstream.

My own experience suggests you will be well rewarded by pairing your very high quality DAC with a streamer of at least similar quality (and unfortunately, expense).

I'm with you on this. I saw a person on Reddit r/audiophile  with $30,000+ worth of new speaker, dac and power amplification planning on using a WiiM Pro for a streamer because in his words, "bits are bits." so it didn't matter.

Oof, that subreddit is pretty much an extension of AmR (aka ASR) and consists of a somewhat younger crowd of HiFi saviors. To each their own, but agree - there may be more to it than “bits are bits.” 

My Dad just received the Eversolo DMP A6 Master last night.  Set up was super easy.   I had it set up in ten minutes. First impressions are really good.   I have always been skeptical about Chi Fi but it is a slick well thought out package that sounds really good.  I am going to bring my RME DAC down at some point to compare its analog output.  
 

Looks like a good product so far. 

I have no experience with Lumin so I can’t recommend one device over the other.  I have an Aurender N200 and this unit can do everything that can , and then some.  It is pretty impressive so far and sounds very good