First, while I agree with the general stereotype that lots of Chinese stuff is crappily made (and I'm actually Chinese, but seriously there is so much terrible quality stuff from there), The DN2000s strike me as relatively well-made, though could be better-relieved at the joints.
A large chunk of my library is electronic music (stuff that falls under EDM, future bass, glitch-hop, whatever, I've stopped categorizing beyond electronic
) and I feel the A83s are very good at this genre. And the great thing is that it is great at many genres so it's enjoyable for many different tastes. For EDM, the A83's bass is full, but not boomy. It offers good punch without going overboard, though I think it might feel a little slow at times.
I haven't personally had any issues in terms of sweat and grime, but I don't use mine in that way. Some do claim that the connectors will need occasional cleaning in that usage capacity. I do have experience with the warranty process though. Basically, first contact is the retailer. But if that fails for some stupid reason, then just contact Michael Lin at Fidue. His personal service is fantastic, his distributors can be questionable, but him personally, he will do all in his power to make you glad you chose Fidue.
Terms and descriptions in the audio realm don't get any easier haha
. I still have no idea what I'm talking about, but some people across several of the threads I show up in think I give some decent contributions. So to those people, thanks for thinking I'm knowledgeable