Rather than v16 (8ba per side to be exact)
I would suggest Tigerism Sunflower, who is Tigerism? Well some people know one of their product named as "MiM Dark Magician"
I don't know how it can become MiM, so i guess people should know that Tigerism is the one
Tigerism known as reputable second hand seller in Xianyu (have around 4 acc in Xianyu with lot of second hand stuff)
Tigerism Sunflower (Planar) 2500 (5000 with upgrade cable) rmb link
【淘宝】
https://m.tb.cn/h.UuIhWGN?tk=XtcmdmEhqGR CZ0001 「tigerism sunflower 向阳花 平板入耳式耳塞监听人声hifi」
点击链接直接打开 或者 淘宝搜索直接打开
And the graph for Sunflower
They also have Octave (single dd) which sold for 999 rmb
You can also seek their shop in xianyu (4 account on xianyu)