I find myself in an odd limbo.
Much of my catalogue was produced in the early wave of digital recordings, when the industry did not not how to equalize for the new medium. Half my library is bass-starved - not because the music itself had no bass, but because the digital recording and mastering methods of the day just did not manage lower frequencies well.
The rest - the more modern part - is well-balanced, especially for mobile audio.
And so these 'buds sit in a very odd place in my world. They're JUST balanced enough, all the way down, for the newer recordings. But, unmodified, they're useless for the older tracks: listening is painful with no bass to support the wealth of higher frequency response. And modified, while the older material now suddenly sounds natural and full, the newer stuff booms heavily.
Don't get me wrong. These are gems: very forward staging, excellent separation with a big soundstage and crisp distinction and detail in mids and highs that make listening a delight. I can well understand all the acclaim for that alone. And now I've done the BluTak hack, I'm having a hard time putting them aside.
But they're one of two personalities: unmodified they make any player sound good, and with a little judicious EQ fiddling they sound exquisite; and modified they make older, bass-starved recordings sound like their vinyl equivalents with the EQ flat. But it seems they can't do both at the same time, and switching between recording styles will be difficult at best. Given their price point, though, it would probably be defensible to get two pairs, mod one, and carry both for listening to whatever material struck one's fancy.
I would love to see Tin Audio produce a separate, bass-tuned version of these with the inboard vent either better sized/placed or omitted. The depth of response with that vent blocked is amazing. Without that, though, a should-have-been-best-of-breed pair is merely amazing-now-I've-fiddled-with-them.