The legendary headphone for vocal timbre that still holds its own against $1000+ headphones in that regard while offering great detail and resolving ability, especially in its price point. Slightly warm sound that trades some of that warmth for a more relaxed treble as the pads break in.
You will need an amp to get the most out of it, and the better the amp, the better this sounds because of how low distortion this is overall for a dynamic driver headphone, with only old school AKG open backs besting it's distortion characteristics around this price point, but they trade a lot of timbre and tonality for imaging and soundstage width.
If you're trying to keep things to a reasonable budget, this is the headphone to start with for at-home listening, unless you're very serious about competitive gaming, and it's probably a headphone you'll use for 10-15 years until headphone technology takes a serious leap.
Cheapest it's been since January 2020, with the all-time low being $269 delivered. US$10 off for new accounts.
Don't get sucked into buying extra pads, they are not the stock (HD 650) pads.
Enjoy!
It comes down to what you're looking for out of your headphones.
The other options that people will gravitate towards are (in my order of preference for a daily driver):
People will mention others like the HIFIMAN Ananda, the AKG K612 and K702, and the Audeze LCD-1, but they just sit a bit further behind.