I purchased a pair of DIY PK3s from dasetn last year and was initially impressed with the sound quality which i thought was at least as good as the original Yuins, if not better. I thought they were great value, but they failed after a few months and i messaged dasetn asking about repair options since it was still within the warranty period.
Initially he said something about having to pay a shipping fee to get it repaired, when i asked for clarification and for his shipping address, he stopped responding. I then noticed that another account, little_yy219 was selling DIY Yuin earphones as well. I emailed this user, and he confirmed he was dasetn's new account. I asked him again for his shipping address and he told me he would send me a replacement pair and i just had to give him my address.
I gave him my address, and waited. Nothing. I sent multiple follow up emails to both of his ebay accounts, and got zero replies. I then found his account here http://www.head-fi.org/u/375683/dasetn and asked if he was the same dasetn on ebay, he confirmed he was. I asked him about the replacement pair that he said he would send to me, and then nothing, no replies again.
Very dissapointing that i got stonewalled over what should be a simple warranty issue...