UM Universal MEST
Frequency response range: 20Hz-55KHz
Sensitivity: @1KHz 118dB
Driver Count: 8
Crossover: 5-way crossover system
Driver Configuration: 1Dynamic low+2BA Mid high+2BA High+2EST Ultra high+1Bone Conduction
MEST Bone Conduction Technology
Diagram 1: MEST Exploded Views
Diagram 2:The faceplates of the headphones are specially designed according to the structure of the bone conduction drivers. Bone conduction driver delivers signals by vibrating the faceplate. Then the signals are passed to the carbon fiber shell and finally delivered to your inner ear.
Diagram 3: The bone conduction drivers are made by metal vibration pieces that are covered by piezoelectric ceramics. The ceramic layers will bend the metal vibration pieces to make micro-vibrations according to the changes of input alternating voltage.
Diagram 4: The frequency curve of the bone conduction driver along with the shell on HATS.
So damn good I got Customs on the way.
Here is my youtube review of the MEST. TLDR Buy it!
Today I listened to this iem and bought it immidiatly after a good freind who is a serious audiophile also bought it imm8diatly after the first listen, what's crazier is that the a/b we both did was vs the noble audio khan which is prices at 2300usd and th4 mest sounded better
UM Universal MEST
Great sound. Great looks. These monitors allowed me to hear the small details in music which earlier I could not hear. Also, you get that bone conductor magic. All in all, it made my listening experience even more pleasant and entertaining. It is just fun to listen to the lossless music.
Minor cons are that unboxing experience felt cheap, especially when you find the 400$ (according to the shop site) cable taped to the side of the box. Memory plastic of ear-hooks is quite stiff. The carrying box is very nice, and comply foams that came in the package is a plus for me.