I am a bit sad. Since I stopped writing due to an incident in 2019, I have said that it is settling, but in fact I am confused. One of the articles was halfway written, but in the end the artistic conception was not fully grasped, and it was stranded again. Now, due to the recurrence of the epidemic, after a long period of isolation after a support session, I can finally take a break, collect my thoughts, and start again. The trigger for this opportunity was listening to the new product of my favorite HIFI brand UM, MEST MKII.
This summer, I always feel that it is passing a little too fast and a little cold. Before and after the summer heat, I watched the falling leaves flying in different directions, standing in the shade of the trees and listening to MEST MKII playing Angela Chang in my ears. "A Diao" in "A Diao", waves of ethereal spirits come over; the wind lifts the slender fallen leaves, but they bloom with golden light. The A Diao in my heart stands in front of me, as if pointing to the unruly future.
Ethereal, delicate yet majestic, a piece of Zhang Shaohan's "A Diao", this is the portrayal of UM MEST MKII!
About UM MEST MKII, here are a few official pictures
A brief introduction, it is the integrated integration of moving coil, moving iron, electrostatic and bone conduction, especially the dual vibrating bones upgraded from the previous generation. Conduction is its unique secret. UM MEST MKII uses a combination of coiled iron static + bone conduction, 7 traditional units plus a dual-vibration bone conduction system, using a variety of units to mix and match. Generally, the low frequency of the moving coil is more natural than that of the moving iron, and the advantage of the moving iron is It lies in the powerful resolving power of mid-to-high frequencies, combining the advantages of moving coils and moving irons as the basis for tuning, coupled with electrostatic units to extend ultra-high frequencies, and dual-vibration bone conduction to achieve full-frequency compensation. This perfect combination has been very mature on the previous generation of MEST. Now the bandwidth of MEST MKII can reach 70KHz ultra-high frequency.
Here we focus on introducing its unique secret book bone conduction.
As a doctor, I learned when I was studying that our hearing is composed of air conduction and bone conduction, and MEST MKII uses a bone conduction unit, which is a multi-layer piezoelectric ceramic attached to a metal vibrating piece, ceramic The thin film drives the metal vibrator to bend and generate micro-vibrations as the electrical signal changes, thereby using bone conduction to vibrate and transmit sound in some frequency bands from the inside of the cavity. The sound is directly transmitted to the inner ear by contacting the skull without going through the sound outlet. Compared with the previous generation of bone conduction, MEST MKII uses an upgraded double-sided piezoelectric bone conduction unit (dual vibration), which is placed on the inside structure of the panel. The middle of the unit is a vibration plate, and both front and back sides are covered with ceramic coatings. Compared with the single-sided bone conduction of the first generation, the second-generation bone conduction has an overall improvement in sensitivity and bandwidth. Because the contact area of ??the bone conduction unit is expanded (double-sided contact with the shell), the vibration energy is enhanced. The higher the sensitivity, the effective frequency response of dual-vibration bone conduction reaches 500Hz-20KHz realizes full frequency compensation.
Let’s take a look at other features of MEST MKII. Because the bone conduction effect depends on the wearing fit, MEST MKII uses a full-body carbon fiber body and a shape designed to imitate human ears. Even the male model has a very good fit. And the size is smaller and lighter than the previous generation. The ventilation holes have been upgraded to newly designed metal accessories, which can ensure that the ventilation volume in the back cavity of each earphone is exactly the same. Let the dynamic coil play a greater role in sound quality. MEST MKII uses UM Copper M2 custom cable. Its sound is clean, transparent, smooth, airy and detailed, and is suitable for all types of audio equipment. UM Copper M2 audio cable, the cable is developed to maximize performance while maintaining high efficiency, meeting environmental protection and ergonomic requirements. The conductor is O0C copper wire, the cable sheath is soft and moderate, and it is equipped with a metal mid-range and splitter. 2Pin flat socket, plugs are available in 2.5mm, 3.5mm, and 4.4mm.
Attached is a parameter chart:
Talking about myself, as I said before, I have put my writing down for a long time. This time I listened to the UM MEST MKII, and the cool yet affectionate performance was once again Captured my heart.
The overall atmosphere of UM MEST MKII is harmonious. My first strong feeling is the full-band immersion brought by MEST MKII. With the support of strong quality, the performance is clear and the hard quality is reflected in the information. Do not give in too much in terms of quantity. In terms of low-frequency analysis capabilities and high-frequency ductility, it is currently second to none among the ten-thousand-yuan earplugs. This is reflected in the fact that whether it is pop music or classical music, it can perfectly express the integrity of music. Whether it is the sense of space or the overtone performance of the instrumental music, a good balance is achieved.
Specifically, the sound of MEST MKII is slightly warm, giving people a transparent and energetic musical performance. Just like when I listen to Angela Chang's "A Diao", it feels like Miss A Diao is standing in front of you. Its low-frequency volume is abundant and powerful. The slightly prominent mid-frequency is just like Angela Chang's ethereal and penetrating sound texture in "A Diao", and the gorgeous overtones can also express the reality of instrumental music. The high-frequency extension is quite good, and the overtones of the instrument are controlled very well. I was immersed in feeling the details of the instrument and couldn't extricate myself.
The sound field is sufficient and will not affect the interpretation of human voices and musical instruments. The connection between frequency bands has always been UM's strength, and it is also very natural this time.
MEST MKII is a comprehensive earplug. It can express male and female voices of different ages and different timbres naturally, delicately, transparently and vividly, and the performance of instrumental music can also be relaxed and relaxed. The impedance of 12.3Ω is very easy to drive. I can achieve very good dynamic performance with only a volume of about 40 when paired with Avery and SE180. Driven by SE180, Angela Chang's voice is ethereal and transparent, directly touching people's hearts: willing to be ordinary, but unwilling to retreat from ordinary!
The summer heat has passed, and I look out the window, wondering what the future holds. Thinking about everything I have gone through in the past three years, I have forgotten a few things. Last night, the summer rain suddenly fell one after another. When the rain fell, the wind blew by and the fallen leaves were all over the ground. Looking back, I felt a little desolate. But this morning, the sky is blue, the sun is brighter, MEST MKII is playing beautiful music, and the whole world seems to be sublimating. The earth makes a warm call, the grass, flowers and leaves burst out with active breath, and the music comes to life under the performance of MEST MKII. The long-lost feeling gradually dissipates in the belated summer. But I know that the three years that have flown by have already passed away! I can only seize the remaining time tightly, although summer passes so quickly, autumn is really coming.
And although I bid farewell to my youth and am willing to be ordinary, I am not willing to be defeated in the ordinary! During this listening tour of UM MEST MKII, I want to be like A Diao, a tree that will never wither!