Understated Style, Underpriced Utility
For me, the Sennheiser PC37X provide an excellent blend of fidelity, utility, and style.
I use these headphones in three scenarios. They replace Thinksound TS03+mic earbuds and I will use the TS03s as my primary comparison.
1.) For business meetings - Despite being "gaming" headphones, these are very comfortable for meeting with clients online. I love that they are 3.5mm and not usb, as I've only ever had trouble with the latter. My voice comes through loud and clear, and others are represented to the best of their equipment's ability, barring networking issues. Furthermore, worry about muting is a thing of the past now that the mic doesn't drag across my shirt every time I move, like the TS03s did.
I also like that they are simple, black, and fairly low profile. They do not consume my face with their bulk nor do I look like a TRON extra with RGB lighting and hyper-glossy plastics all over my head. They help me maintain my professionalism.
The volume control is quite nice, but raising the boom to mute seems to trigger my laptop to switch to integrated microphone array. Not sure if it's the headphone's fault, or my laptop's, but the utility of this mute feature is currently lost on me and the primary reason I deducted from 5 stars.
2.) Casual music in the office - I stream my office music from either Tidal or Youtube. No fancy dac's or headphone amps, for the most part. My Dekoni Blue headphones remain my preferred office listening gear, but while they are stuck at the office and I, home due to COVID19, the PC37Xs are no disappointment. Bass, trebble, and mids are all there.
On the other hand, volume is not. As I said though, I am not amping these. Sound signature is fairly typical, to my ear. A standard "V" with, perhaps some subdued bass. These are not thump-cannons and I am glad of this. The TS03s were bass-heavy and thus unsuitable to my ears for long listening sessions, either voice or music.
3.) Casual gaming - I pretty much only use these when I play DayZ on Xbox. DayZs sound design is not stellar and its staging/positioning system is a step up from garbage. That said, these headphones help quite a bit. I am better able to place zombies using sound, alone. The open-back design of the PC37Xs is nice for keeping awareness both in- and out-of-game. I haven't noticed significant sound leakage, but I don't normally use a volume that would be bothersome to someome a few feet away, anyway. Plugged into my Xbox controller, these headphones seem to improve battery life, over the TS03s to a small degree.
I have two complaints beyond the PC mute issue mentioned above:
1.) The cord is really long. I prefer long cords for music listening, but managing what seems like 8' of cord on my desk is a pain. It is worse when gaming since the controller is in my hands and that is where the headphones plug in.
2.) The included cable splits the audio and the mic channels into two trs cable ends and they provided no trrs adaptor. I have no idea where I would use a split cable like this and most trs jacks will handle trrs ends just fine for audio-only. Given that I intended to use the mic frequently, I bought an appropriate 2x trs F <=> trrs M adapter from Sennheiser for ~$15. Doing this is pretty backwards to me and seems a s--tty way to drive accessory sales. Where I could of had a nice, clean, slim cable, now I have forked, then rejoined, mess at the end. A trrs cord with an optional splitter would have been a much more elegant solution.
PC37X are excellent all-around phones for business, music, and gaming, once you buy the adaptor. Do not expect audiophile-level music listening experiences.
Would recommend to a friend.