They are two different IEMs.
Different drivers / crossovers / and hardware configs.
Night Oblivion was dealing with chinese domestic market with Jinny’s own tuning. W10 is one of them and that where I noticed the existence of Night Oblivion.
W10 is unbelievably bright tuned and it’s unvented as well. I didn’t find W10 particularly interesting but I know that’s what Chinese domestic market wanted. The cost of drivers are down graded to sell for Chinese domestic market too.
If you want a thin sounding bright IEM with pressure build up, with typical BA timbre, you can try W10 though, it has technical chop, and that’s why I felt Night Oblivion is capable to make something.
It took a long path to get to build Butastur, and here we are.