I've had mine for a couple of weeks now. I've been lurking on this thread reading all the impressions and I'm stunned by some. Anyhow, in short, I love my PX7. Comparing them to the my Bose N700, Sony 1000XM3, and Sennheiser Momentum 3, they are my favorite of the 4 with the Bose N700 a close second.
The thing about the PX7 for me is, it ticks more boxes of what I want in a premium ANC headphone than the others. It doesn't win in all categories, but it ticks the most. What are those categories? Sound, Great ANC, the ability to easily switch between multiple devices, comfort, and a good mic for phone calls.
Sound - The PX7 and Sennheiser M3 are a step above the other two in my opinion. I like both. They sound different enough where I could see some people opting to own both. The PX7 is slightly more V Shaped to my ears than the Momentums. It's bass response is more linear. The Momentums have noticeably more emphasis on the sub and mid bass regions. Both have a revealing treble although I find the PX7 ever so slightly brighter in this regard. The Momentum's mids are better tuned to my ears. If I pick a weakness of the PX7, it would be the mids. The mids appear linear and clear, just a little withdrawn. Not greatly so though. The Momentums have excellently tuned mids as most Sennheiser headphones do. Where the PX7 ups the Momentums is in the soundstage. I found it much easier to pick out individual sounds within acoustic music on the PX7. The Momentums are still better than most ANC headphones in this regard, just not to the level of the PX7.
As far as this auto EQ/volume limiter thing people are complaining about. It's not that bad on the PX7. The thing is, I've always noticed some volume eqing going on with headphones that have good to great ANC. Manufacturers do this to prevent distortion. Bose is the worse. They actually market it calling it Active EQ. Smart on their part. Makes it sound like a good thing to the unconscious consumer LOL. The Sony 1000XM3 and Momentum 3 are the only ANC headphones I've heard that don't have some sort of active eq adjusting/volume limiting going on. The Sonys do distort if you get close to Max Volume though. The Momentum 3's ANC is average to below average so I suspect they didn't need it. Sennheiser actually markets these as sound quality first, ANC second. I gather they put just enough ANC in as to not cause distortion where they would need to have active eq. The PX7 has a mild volume limiter on when you have the ANC on. When you get to a certain volume (around 80% on my iPhone), you can hear that certain frequencies within the sound stops increasing. This is most likely to avoid distortion. I find that if I adjust the headphones via the ear cup, it helps in a weird way not make it as noticeable. It's really not a big deal to me as I don't listen loud enough to where this would become an issue. Loud listening to me with the PX7 is 75%. It's plenty loud and dynamic.
ANC - The Sony's clearly lead this category to my ears, followed by the Bose and PX7. The Momentums are clearly in last place in this category. The thing with the PX7 is, it has the best passive isolation of the 4. So it actually cancels sound really well. It handles voices better than the Bose in my opinion. Not as good at cancelling jet engines as the Bose and Sony though. Still not horrible though and is right behind them. I couldn't here anything with music playing at a decent volume (50% or higher).
Multipoint Bluetooth Pairing - The Bose and PX7 CLEARLY win this category.They each have an app where you can control what devices you're connected to without ever having to go into settings. The PX7 takes it even one step further, you can double push the power button to disconnect from all devices and then just connect to a single device. This is helpful if you're on a device that doesn't have the app and you just want to connect to it without looking for your phone. I've used this method many times connecting to my MacBook Pro.
Even though the Momentums have multipoint pairing, I find it the most frustrating to deal with. Even over the Sony's 1 device at a time connection. The thing is, I haven't found an easy way to manage my connections. For example, in the morning I walk my dog. I like to put on my headphones, connect to my phone, and start listening. But sometimes at night, I watch my AppleTV using my headphones while connected to my phone in case I get a call. This creates an inconvenience for me if I use the Momentums when doing this. If I forget to disconnect the Momentums from the AppleTV before I go to bed, in the morning I have to turn on my TV, go into my AppleTV settings, and disconnect the Momentums. Otherwise I will have to wait until I get outside and out of range before turning on the Momentums so it doesn't connect to the AppleTV (The Momentums always remember the last 2 devices you connected to and automatically reconnects). If I don't, while walking my dog, I will start getting major breakups in the audio until I'm fully out of range of my AppleTV. This sometimes can last for a couple of minutes if my dog stops close to my house. And it will continually try to reconnect. Even if I put the headphones in bluetooth pairing mode and connect to my iPhone, it will still connect to the AppleTV automatically. This is the biggest flaw of the Momentums in my opinion. They need a device switcher in their app.
Comfort - The Sonys are the most comfortable followed closely by the PX7. Although I find them all comfortable enough to wear all day. This is the one category where I would say that none are far below the others.
Mic Quality - Bose wins hands down. Mainly because it blows the others away if you happen to be on the phone in a very noisy environment. It's truly remarkable and proves Bose's continued marketing to Business users over mainstream consumers. I've been told both the Momentums and PX7 sound very clear in quiet environments. However, I have been told by a few people that they could hear light to moderate background noise more on the Momentums in comparison to the PX7. The Sonys are out of this race as most people tell me I sound muffled. I've actually had to take the Sonys off on more than one occasion because people say they are having trouble understanding me. That's a HUGE difference from it being too noisy and people can't hear you.
In Summary, the PX7 are my overall favorites followed closely by the Bose N700. I've already sold my Sony 1000XM3 and sent my Momentum 3 back to Amazon. I will most likely keep the Bose N700 for now strictly for traveling as I'm a business person myself and am on calls quite often. The PX7 are my daily drivers for in the office and at home music listening and TV/Movie watching. I have the new Beats Solo Pro on preorder. I'm really hoping they're close to the Bose in Mic Quality. Apple's been advertising their improved mic. If so, they will replace the Bose as my traveling companion. Mainly because the Beats are smaller, more compact, easier to hang around the neck, and to be honest, I preferred the Solo 3's sound to the Bose N700 for traveling headphones. I like some excitement and punch to my sound when moving about. The Bose, while clear and neutral, has always been a bit boring. They're also non pleasing to my ears at louder volumes.
