It's not really advancement in headphone technology as much as china brute forcing cheap manufacturing.
Yeah it's not just headphones either, China also makes some decent smartphone knock-offs
What is everyone's personal preference between Open or Closed Headphones?
I've recently started reading up more on all of these things and my HD-280 Pro's are Closed, but reading reviews on some good Open ones say they sound better than Closed because of less distortion or something, at the expense of everyone being able to hear what you're listening to.
Since I may be in the market for another pair, I should decide between these 2 factors first. I don't need to worry about people hearing what I listen to since my earphones are for out of the house and headphones for my room/gaming. So if Open sound "better" that would be a good trade-off.
It really depends. Mag Dogs, LFF Paradox, Denon D5000, and KEF M500 are a few examples of closed headphones that sound open in some ways. Closed headphones usually sport better bass impact and a more intimate soundstage, while open headphones usually sport wider soundstage, better instrument separation, and the least amount of coloration...But there are so many exceptions to this basic outlook that maybe it's not even worth noting.