I’m not surprised at all. Fwiw I’ve found that the DACs I have here all sound “similar“ to the extent that many visitors here would say they sound the same. It is really a case of whether the subtle differences are significant to any particular individual, particularly one who sits down and gets fully engrossed in the music - and how many normal folk do that?
The other point, I find, is that some differences become apparent, not when closely listening to the sound but when listening to music and forgetting about the sound per se. In practice some DACs I have distract me from enjoying the music, some don’t. I choose the ones that consistently don’t - for whatever reason, but the curious thing is that when trying to analyse and compare the sound the differences between them are subtle at best. Perhaps it’s best to assess audio equipment in the manner for which it is intended to be used, not as a designer creates it?
To appreciate a piece of woodland we need to experience it as a whole not dissect and analyse every leaf…
Largely this. The differences are subtle and they tend to get overblown in discussions and reviews.
And also agree with the point that A/B testing is limited - sometimes it takes me a month or two to of straight listening to some gear to figure out I do / don't like it, and then I have to reverse engineer what's bothering me. Sometimes I can suss it out, sometimes I can't.
Whether that difference is important is probably down to the individual. For some it won't, in which case Topping all the way. Why waste your money. For others it will, in which case be prepared to spend more.
Also, the gear it's attached to is relevant. My Dali Opticon 2 Mk2 I could throw any DAC on and the difference wasn't important enough for me to worry about. A Topping or Eversolo with these was just fine. When I got the Dynaudio Heritage Special in, which are stupidly resolving and revealing - to the point of annoyance some times - DAC choice became more significant. (FWIW: the 3 AKM/ESS DACs I tried with Dynaudio created a clear sharpness/edge to guitar fret noise which was not pleasant to my ears. Didn't have that "scratchy" issue with a Chord or a Merason. Imagined or real, I dunno. I'd like to think I could pick that out blind quite easily. I'm tempted to get one of those ABX boxes)
A ton of other factors too... room background noise levels, hearing range (one of my friends can only hear up to 7khz!), choice of music, room acoustics, vol level you listen at etc. will all effect whether the subtle differences are more or less important.
A 72yo dude who can barely hear up to 9khz, listening in a room with a ton of room reverb and double digit dB room nodes, with a background ambient noise of 40-50db, listening on his Kef LS50s at 70dB peak vol is likely to have a different experience with DACs than a 21yo chappy with 20khz hearing in a perfectly treated room with 30dB ambient noise, listening to some Magico floor standers at 90dB peaks, for example.