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.
This is a great IEM, if you already have an analytical balanced IEM and are looking for one that is more fun while still being very accurate and detailed this one could be the ticket to ride. The bass and treble volume/presentation are very engaging to my ears and if you get a good fit the midrange is also great. No sibilance for me, No Hiss, I am using a Lotoo P6K DAP. Stock cable is serviceable, a little thick but otherwise fine. The case the unit comes with is the best case I have gotten so far with an IEM in terms of usability protection and size. Recommended.
listening to them as a i write this review.
By far and away the best set of iems I have ever heard or,owned .
Plays my library incredibly well.
Great in depth review by bad guy good audio, check it out
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