My initial thoughts and definitely not a formal review after a flight from LAX to SEA and using these a little bit in different hotel rooms versus the Beoplay H8 which I've used since they came out in early 2015.In other words, the H8 is a pair of headphones I know very well and this year alone have already used on a lot of flights
1. So far, I find them very comfortable (not that the H8 isn't). It will be interesting to do Seattle to London with these - will my ears get hot (a typical thing for me with over ears for prolonged use) or annoyed (as they usually do with on ear on long flights) after 3 or 4 hours? I will update accordingly.
2. NC is good, but not Sony MDR-1000X/Bose QC35 good. That isn't a bad thing at all, just setting proper expectations. I would say it's at least as effective as the H8, which like the H8, is impressive for a version one. They both sound slightly different with regards to how they implement NC (more on that in a minute, especially as I talk about sound quality). The Space One does better with low rumble, whereas the H8 is good there and fliters out some of the higher stuff slightly better (the Space One leaves some of that ... again more in a second on that). Overall I'd say they both are fairly equivalent from a NC standpoint, which to say is very serviceable on a plane. It's not going to drown out everything and completely isolate you.
3. I didn't notice any typical NC "suck" i.e. pressure. The H8 has very little of it compared to most headphones I've tried, but I don't notice it on the Space One at all.
4. The Space One's sound quality (always subjective) is excellent both with and without NC on. Keep in mind source and material will help or hurt. I used a mix of compressed music as well as hi-rez (mixture of 48/24, 96/24, and 192/24), and that ranged mainly over rock and jazz
Soundstage is nice and wide how I like things. The H8 is wide, but these are wider. KEF tuned these really well. In fact, there is very little (if any) difference between NC on and off which is quite a feat. Very few NC headphones I have owned have achieved that, and therein lies the tradeoff. I think they could have made the NC better, but it would have affected the sound much more - especially on the top end. As much as I really like the H8, with NC on, it's still got that weird-ish high end sometimes that plagues NC cans regardless of compressed or uncompressed music. Things like cymbals sound better so far on the Space One - it was one of the things I noticed in the store. While I've noticed it, the H8s have some "scooping" going on with regards to tuning, especially in the upper range which is a touch off compared to the Space One. In other words, like I said above, NC is good (again, with a very small sampling size), but it's not going to block out everything a plane throws at you. With music on or listening to the in-flight entertainment system you may not even notice to be honest.
So far, one of the biggest - and surprising - differences I've noticed in my limited listening is that the H8s sound flat and boxed in compared to the Space One. One is that the PF/KEF has more lower bass extension (I don't listen to EDM so I can't fully test these to the extreme), but when songs come on that utilize a 5- or 6-string bass guitar, you
feel it more but not in a bloated mess kind of way. Even with a 4-string upright, on a song like "Oska T" (from John Beasley's
Monk'estra Vol. 1 album - 96/24) has more extension and body. Another great example is the song "Droned" from Phil Collins'
Face Value (96/24). It's not weird or artifical. By comparison, the H8s have slightly more mid-bass vs. low bass, so they're slightly more accurate (ever so ... not a ton; the KEF is still accurate without being mushy like a lot of bass I've heard such as on many Sony headphones which often have that weird upper register suck). Horns sound natural, and so does piano. It even handles classical well from the limited amount I sampled.
My two biggest gripes at the moment:
1. I wish, like B&O, they used real leather and not synthetic. For $420 USD, I doubt it would have added
that much to the cost.
2. The mechanism for accessing the battery door for the AAA is horrible and one of the stupidest things I've seen in a design. What were they thinking? I'll expound on that in a formal review.
I'm looking forward to comparing these to the Sony 1000X in London on this trip, and then next month, against the Beoplay H9.
More as things develop