These headphones must be the king of value. This, however, is not to say that buying something 50% to even 90% or even 100% more expensive in some cases will necessarily give you better sound.

Bass is responsive and effortless, absolutely lovely and never overbearing.
Highs are crisp and never disappoint but somewhere in the mid to high-mid range, and only in certain tracks, there seems to be an overexposure.
Low-mids are plenty nice.

About the sound stage, dynamic range, and track separation, they are just enough - this means of course that you can get away with it and have a good listen, but that it also makes you to desire 'just a little more'. For the price all of these important elements are irreproachable ofc. (I've just listened to a €50k Perlisten S7t based setup so I might be a little sensitised to these in particular).

All in all, very happy with the purchase, I wanted an affordable pair with Aptx lossless and these have surpassed my expectations in more than one way which is fantastic.

For the next iteration if you can improve just a little bit the soundstage, dynamism (attack speed etc), and track separation, while working of that (potential) mids overexposure, I would happily purchase for up to £360-£380 (from £500 onwards I'd be expecting magnetic planars).

Nitpicking aside, very happy with what I got :)

I am 2 weeks into these headphones, a replacement for my Sony WMX1000Mk2 which came to the end of their life. These are amazing, must better sound than my Sonys and significantly more comfortable. The added touch of having Matt Berry provide all the quotes from “power on” to “Transparent” is genius.
If you are in the market for an excellent set of headphones and you want quality over trend I would recommend you walk on the wild side and by the P100’s.

These headphones get a lot of things right. The sound, the connectivity and the build seems great. The battery is amazing. Overall I am very satisfied.

Just a few minor gripes that I hope will get fixed by firmware updates - currently the headphones don't remember the last settings before shutting down, so if you want to use a specific setting like voice focus on transparency - you have to set it anew every time. The same is true for the 'gaming mode'. Currently I have to keep Bluetooth on in my phone in order to set those settings each startup even if I want to use the headphones with my PC. Another thing that stings a bit is the way they handle higher distances - my previous Bluetooth headphones would lower the quality a little at first and kept audio seamless when used on slightly higher distances, while P100 cut out for around 1 second before resuming function when dropping packets. Otherwise the range of the connection is excellent with a class 1 BT dongle and I'm hoping it will improve even further when I get my hands on a lossless aptX dongle as soon as those become available in Europe.

Very nice packing, awesome sound and most of all -at least for me- the battery!