I would like to hear it as I said before, but I am not sure where I would do that. The M15 was okay on a short listen, that is the last FiiO gear I have heard. Its faults, to my ears, weren't readily heard from short listen. If Daniel is hearing faults on a brief listen, I can only assume at some point, you will hear it. That said, if it is a signature you like that is cool. All of this is opinion anyway, nothing more, nothing less. Some folks will buy it from your opinion, after all, you own it and have logged some time with it. And some won't buy it based on Daniels brief listen. Such is Head-Fi.
Absolutely it's important to have different takes and I trust
@Deezel177 completly I blind purchased so much (flagship) stuff from his reviews without even an audition (and never regretted it)
But I have listened almost 24h in two days and if there was something to ear I don't like, I would have. I have owned so many DAPs : WM1A, WM1Z, DX200, DX220, DX220 Max, DX300, LPGT, LP6K, R8, M8, N6ii and N6ii Ti, RS6... None wowed me like M17 in a jaw dropping way so that says something. My last FiiO was X7II and it was not a very good experience...
But things I value and am willing to compromise are not what someone else will... also remember I don't own or have owned sedentary as it doesn't fit my use case so desktop like amplification is bound to impress me more than the average as well
(each time I had the opportunity to audition good amp like ICAN Pro with flagship IEMs I was wowed as well... there is something to the additional headroom that changes the game). I think FiiO has done something special with its THX amp and power design. Would that be even better with something like R2R or AKM DAC? Maybe! ESS9038 Pro is no slouch though and pretty capable already and IMHO it falls down to implementation and tuning more than the chip, I do get the ESS past history but I think we're past what made the bad rep honestly. I don't see people saying the AK that run ESS9068AS (SP2000T among them) or ESS9038 Pro are frail and brittle... or DX220 Max either which runs 9028 Pro (like DX200/220) too so maybe FiiO suffers from a bit of bias (which I trust Daniel hasn't BTW) based on past history as well? Dunno...
I know why I couldn't keep DX220 Max but some people love it! M17 is basically the opposite philosophy in terms of tuning, so personal preferences highly come into play. What those super sized DAPs share is desktop like amplification and it takes them a notch further in terms of driving power... The form factor (untypically) fits the bill for my home listening. I even wished more manufacturer would go there offering more options.
In the past I had only one DAP but I have come to believe I need more that one to have different sources (Next up will be N8ii for sure
).
But really, it's hard to go back to lesser amplification or else I'd need to go desktop.
Maybe once I have moved from appartment to house which should be sometime this year.