Well than I'll wait for the O update on my LG V20 to hear the LDAC.
For now I don't really hear any big changes in sound quality between wired vs BT or even between regular vs hi res files.
Which leads me to my question, for those who have experience with a number of headphones - Where would you rank the 1000x, based only on sound quality?
and also, which outdoor headphones would you recommend if you want to go a step forward in sound quality? regardless of NC&BT features.
Well, I've posted a more in-depth review a few pages back with comparison, but here's my take, in short.
You should look at these headphones if you're looking for portable use. That means on-the-go headphones (wired or not) with smartphone call capabilities.
This is what I was searching for. I first proceeded in testing them against all the high end bt headphones at the headphone store I was at. ATH MSR7 bt, Momentum 2.0, PCX550s, P7 wireless, QC 35, ABN100. In short, I prefered 1000x sound over all of the above mentioned. In a bit of detail, they are clearly superior from all aspects over all of these (for example, QC35 sounds muffled, PCX550 and ATH try to kill your eardrums with the highs, Momentum 2.0 sound a bit muffled, ABN100 sound similar but not as precise or wide), except of the P7 wireless, which sounded similar, maybe a bit MORE V-shaped. But the P7s are really heavy and have no NC, for the same money.
I then proceeded in trying out a more audiophile portable setup: Sony MDR 1A (i owned a pair) + Dragonfly RED. Surprisingly, besides being 30-40% louder at max output than what the 1000x can, both wired and wireless (connected to my Xperia XZ), the gains in clarity and separation were not worth sacrificing NC, wireless, phone and music controls, and especially battery, since the Dragonfly RED drains your phone's battery quite badly. It obviously sounded better, but by a surprisingly small margin.
Wired vs Wireless - depends on the source. The XZ has great wired sound quality, but I found that when used Wireless on LDAC (which basically means all the amplification and DAC work is done by the 1000x) it sounded a bit more precise and wide, which means that the 1000X has a really good DAC inside. We already know it has an excellent hi-res amp (S-MASTER HX) and it upscales mp3 files (DSEE HX), so all of these technologies, together with the adaptive NC (which means that if you're in a more quiet envirnoment, the NC dials back to favor sound quality as much as possible, since NC tends to infringe on certain extreme low and high frequencies) made them, to my ears, after a thorough round of 3 hours of headphone-testing, the best wireless sounding headphones in terms of detail and soundstage, together with the P7.
So if you want the BEST possible quality in a headphone that ticks all the portable listening boxes, and you don't want to carry an amp or dac connected to your device and wires, get the 1000x or the P7. Test them out. Unfortunately P7 doesn't have NC.