So, during last week, I was surfing the web. Than, I found a ad that was selling a dual driver iem for around 30000won, or around 30USD. Being an audiophile, I had to click it.
How shocking would it be to find a dual driver iem for 30 dollars! But it wasn't a dual dynamic or armature iem.
Named EX2-501, these iems have a DMS speaker and a dynamic speaker.
DMS is a speaker meant to shake the bone to pass on the sound, and hence, will literally shake your head. The dynamic speaker is used for more refined bass as well the mid/highs.
My guess is that the sound will not meet audiophile standard, but what I'm seeing is a possibility for a higher end audio companies in Korea to develop similar product, with variations.
Here are some pics
It has a separate volume control for the dynamic and DMS speaker, allowing user to change the balance.
Science and inside of the iem