I was really excited when I read about the metal-focused wireless earbuds, referred from a thread but when I did a search not many reviews mentioning about this kind of earbuds. However there are a few tips how to choose wireless earbuds for metal music, one of which is avoiding bass boosted earbuds because they tend to sacrifice the clarity of snare and cymbals.
Another tips is understading your music. Metal is considered a busy and fast-paced music, and it requires earbuds that are able to catch up with the rhythm at certain frequency range (it's not about it sounds 'fast enough' or technically how quickly earbuds respond to an audio signal), in other words, they give significant output at certain frequency range (2 - 3 kHz).
It aslo depends on your preference and the metal music which varies greatly across decades. You may like more bass, or treble and at different volume levels they weigh differently. You may have to trade off a bit of bass for soundstage, or vice versa. Some are matched to your taste in soundstage and details but they have a lot of punchy and metal bass.
You may wonder if there are a selection of earbuds that are perfect for the various genres of metal out there. They have deep bass extension, good separation, greate clarity and a wider soundstage. Here are our top recommendations: