HI guys, I just had a chat with BGVP's boss. A few things which I would like to share from our conversation :
1) NiceHCK M6 is not the same as DMG. They are just a copy of DMG. Attached here is a official letter by BGVP:
2) Regarding the vent hole at the back of the earphone that
@Dsnuts mentioned. The picture of DMG where they have the holes are infact, pre-production pictures. BGVP never released any production dmgs with back vent hole. Regarding the way where BGVP will clear off old stock is debunked as the newer silver colored DMG also have the exact same vent holes as the current DMG.
The reason they removed the back vent is because they added the big vent hole next to the MMCX pin. This improves the airy-ness of the earphone and this is the one and only version of DMG for now.
3) Gary ( the boss), mentioned that they believe the copy uses cheaper local BA drivers from china while the drivers used in DMG are custom made from Knowles, which explains the difference between the price.The reason BGVP didn't advertise it as knowles driver is because they slapped on BGVP's logo , they can't show any prove of their order from knowles because they are not allowed to do so by contract.
4) Gary actually mentioned that he welcome us to go for a teardown to do a 1 to 1 comparison between M6 and DMG to prove that they are different. He did say that there is something good which comes from his product being copied, we can compare between the 2 earphones to decide which is better.
5) Gary said DMG actually have the HI-Res certificate while the M6 probably does not have it.