With more and more favorable reviews of HLSX--808 like this, I had no regret purchasing it few hours ago. I bought it on taobao.
Before I purchase the 808, I had a little chat with founder of HLSX/MaGaosi brand, Sanhoo珊瑚. He told me, initially he didn't know why there's more and more people asking for 808 until somebody told him it's widely discussed here. He would like to thanks all the people here for the support. On his request, I shared with him the post of
@1clearhead comparing 808 to AKG K3003i. As you may know 808 is also known as HSLX--18, MaGaosi M1, so I asked him what's the difference. He told me they all sounds the same except for the fact M1 (rose gold or black, the one with mic) are mass produced version while 808, 18 are handmade (they called it "DIY"). On taobao you can see M1 is actually more expensive, it is because the cable with mic costs more.
He also told me he would recommend people with higher requirement to get their BK wood series (BK33 and BK35). They are using custom wood dome diaphragm hybird, they got bigger driver unit and nicer mid compared to 808. He had been developing BK series for more than a year now and they are all DIY by himself.
HSLX is also making full size headphones with multiple drivers. He claims MaGaosi is the only brand that produce hybrid driver headphones on Taobao.