>>107079884
define good
sm4 has harman ie 2019 tuning (maybe not as bright)
it means that if you have a normal fit they will have thin scooped mids and bright treble boosted by your length modes (around 6-8k Hz)
it's not exactly bad IEM for a lot of reasons but I dunno if it can be recommended unless you will be using something like triple falange eartips or foam....
I'd just wait for daybreak to go on sale and get them
(even if you have abnormally deep fit sm4 won't fit your HRTF lol 711 2019 IE tuning is really misguided...)