One thing to consider is that audio memory is fleeting. Unless you are able to switch quickly from one set up to another and have them be volume matched to within 0.1dB, making a comparison with any veritas is difficult at best unless maybe you are playing a specific snippet of music that has something in it that you are noticing for comparison, say the sound of a kick drum or a flute or whatever.
Some reviewers, for what it is worth, which might not be much, do say the new Node Nano is extremely good for its price, besting the Node X, and if you are using it to feed an external DAC, it simply might be doing a pretty darn good job of it.
Ultimately, I think you may have reached a point of diminishing returns. Time to just enjoy the music and be happy, especially with that AR DAC 9. Your room and of course your speakers are probably making far more difference than the difference between streamers fed into an external DAC, especially if the external DAC is doing its own reclocking.
Discerning a difference between streamers is difficult...only me or common for all?
I have struggled to appreciate the upgrade to the streamer in my system. A couple years ago I had an Audio Research DAC 8 being fed by a Bluesound Node 2i. I picked up an Aurender N10 and did not appreciate anything so sold the N10. I tried a couple all-in-one units. First was the Aurender A20 and I was happy but curious about dCS. I got a Bartok 2.0 and felt the music was more natural sounding from the Bartok and sold the A20. I have always wanted the Audio Research DAC 9 to match all my other AR gear so got one that showed up on eBay a couple weeks ago. Since I couldn’t use the Bartok to stream I ordered a new Bluesound Node Nano so I could utilize the DAC 9 immediately. The pair sounded wonderful but I did not compare it to the Bartok. I ended up getting a quick buyer and it was already gone. The following week I purchase an Aurender W20. I was prepared to have my mind blown....but no. Some albums I could not tell any difference in the sound and others I think the W20 sounded slightly better but again...nothing huge. For the money and the space the W20 took on my shelf, I sold it. Over the years I always appreciate upgrades for all other components. This makes me feel like I am losing my mind. Have any others experienced this regarding streamers? I want to try more. Auralic and Lumin are on my list.
Thanks,
Dana