I get asked for audio recommendations a lot, here's what I recommend. Audio is subjective, but every device on this list is objectively good, and will absolutely get you to having high-quality sound without much effort. Everything with a ! in front of it, I use personally, and every device on this list I have touched at least once.
Note: This guide is directed at streaming / content creation.
Audio Setups for streaming / content creation
Headphones:
Closed-Back (Good for everyday use, along with at-home use, has less of a stereo image)
https://north-america.beyerdynamic.com/dt-770-pro.html
($130)