A8000

The development of A8000 started by reconstructing physical measurement methods and subjective evaluation methods. According to the subjective evaluation method established during the development of the D8000, the E -series is a bestseller with highly valued sound quality. The A8000 has adopted a new evaluation indicator in its subjective evaluation method.

Elements that determine the sound quality of earphones and headphones are dominant, but there is a change in sound that is not possible. It is the impression of the sound that is the most important transparent sound in classical music recording, and the sound that is fixed at a distance is clear. We have thought that realizing this sound impression is extremely important in gaining the excitement of listening to music. We believe that our high evaluation of our headphones D8000 is where we could achieve this transparent sound. Until now, earphones have changed the sound due to changes in frequency characteristics called tuning, but the time response does not change significantly, so it is difficult to achieve transparent sound by tuning.

This time, we have developed a PTM (PTM "(PTM" (PTM "(PTM"), aiming to realize a transparent sound with earphones. As a result of evaluating and improving the analysis of impulse response that was not understood only by the conventional frequency characteristics, and the correlation between the main component analysis of the subjective evaluation, the A8000 is also an ideal ideal dynamic plate material that is extremely light and fast. A diaphragm that is formed with the ultra -thin berrillium foil (truberialium) is being adopted.

Adoption of truberialium diaphragm

The A8000 has a molded diaphragm that is a molded ultra -thin berrillium foil (truberialium), which is also an ideal dynamic plate material that is extremely lightweight and fast. The specific gravity of the berrillium is 1.85, and the propagation speed is 12,900m/s at 12,900m/s, which has an ideal feature as a diaphragm that is second only to the diamond. The adoption of a truberium can be transformed into a transparent sound, which leads to the improvement of the time response. You can feel the sharpness of the rising sound and the lingering sound of the disappearing sound, and you will also feel the quietness between the sound and the sound. The thin foil of the beryllium is difficult to process, and the engineer struggled to stabilize it as a product, but it is a valuable material. In order to achieve transparent sounds with such excellent materials, other parts of the driver unit and design and manufacturing technology are required of the same quality as the material. We succeeded in taking advantage of the experience of developing and manufacturing dynamic driver units by the company.

* In the past, what has been regarded as a berrillium diaphragm is a very thin coat with a beryllium on the resin film on the resin film on the surface. Such methods are effective as an improvement method, but the characteristics of the film are dominant, and the sound and characteristics of the material of the diaphragm are completely different from the sound and characteristics.

Both the excitement obtained by music of a wide range of genres and the good sound with universality

Focusing on "Relationship between the music of music, the dynamic range, and the physical characteristics of the earphones and headphones", we made sounds. We tried to organize the sound creation of music in the recording by setting two axes. One is a way of thinking about the distance of the sound. In classical and jazz, it is considered that recording that emphasizes "sound field", such as a sense of distance and sound, is being made. On the other hand, in the recent recording of rock, POPS, and recent anison, it is thought that the sense of distance is not so important, and the "resolution" that each instrument and vocals appears in front is more important. Masu.

The other is the "dynamic range". In other words, the volume of the volume is the time change width. If the dynamic range is large, it will naturally be possible to express dynamic music using the time change of volume, but on the other hand, the dynamic range so that all instruments and vocals are always in front of you, rather than changing the dynamic range. Some music is preferred for recording that reduces the width of. The differences in these ideas are not the best, but the difference between music and what is required of music.

Classic, especially the orchestra, is particularly important to the front and rear relationships in the depth direction of the instrument, and there is a stringed instrument in front of it, and the sense of distance and volume of each musical instrument, which is located with wind instruments, percussion instruments, is lost. The music will go bankrupt. Therefore, there is no need for a uniform resolution that approaches all instruments in front of the eyes. However, in classic, for example, in string quartet, the dynamic range is narrowed, and the resolution of each instrument is more prominent. Rocks and POPS do not require a sense of sound fields as classics, and emphasize resolution rather than sound field.

These prerequisites are particularly important in listening of earphones and headphones, and it has been found that if you use a target curve or driver design suitable for each, you will be able to enjoy music more. Please refer to the following graph using the sound field feeling and resolution in this music as a horizontal axis and the dynamic range as a vertical axis. Since the A8000 has a even more time response, it is approaching the D series, so a wide range of music from a narrow dynamic range and a sense of resolution in rock to a sense of resolution in a large dynamic range and a wide range of sound fields in jazz. The sound quality can be obtained to get a sense of uplifting. The biggest feature of A8000 is that it is realized by the sound created by the method of producing a small number of enthusiastic fans by strong personality, but by the sound that aims for higher universality.

Feeling of mounting as if customized

The A8000 has a better feeling of wearing based on the case design, which is the best solution of IEM established by the development of Bseries. Whether or not the earphone feels good is determined by the pressure. At first glance, the method of retaining the silicon reconciliation, such as claiming an organic shape and choosing an organic shape, looks correct, but always puts the power to the ears, puts a burden on the ears without notice, and accumulates fatigue. I will do it. Compared to the shape that is organic and large on the ear, we aim for a feeling of mounting without a feeling of pressure. Therefore, it complies with many ears. If there is no feeling of oppression in all the points in contact, you can feel that the installation of the earphones is so comfortable, and it has an excellent feeling as if it were a customized earphone.

Stainless steel cutting housing with a "tetra chamber structure"

The dynamic driver unit has a significant effect on the sound quality of the front room and rear room of the diaphragm. In particular, the movement of the newly developed Trueberium driver is very delicate and will be greatly affected by the space inside the housing. The design inside the housing can be calculated by the simulator to some extent, but after that there is no choice but to repeat the prototype until the target sound quality is reached. Inside the A8000 housing, in order to optimize the movement of the driver, the "tetra chamber structure" is divided into four separate housing, the driver after the driver and the double structure, and the MMCX connector part. I am. The driver is mounted directly on the housing in the front room, and the unnecessary vibration is suppressed and the outline of the sound is clear. In addition, each of the four chambers realizes a low range that is compatible with the volume and tightness, and also has the effect of preventing sound leakage.

MMCX connector + silver coat cable

The ear hook is useful for reducing touch noise, and the unpleasant sound (cable touch noise) generated by touching the cable and body when walking is dramatically reduced. Our conventional ear hooks are more slim than general ear hooks, featuring the comfort of forgetting to hang it, with no foreign body feeling compared to cables with wires and resin. It is a type with a lock mechanism (Type B) that can be firmly fixed to the cable.

MMCX Assist that MMCX is easy to remove

It is an item to smoothly attach and detach the earphone cable using the MMCX connector. With the MMCX Assist, the MMCX connector can be easily removed in the direction of the cable coming out of the MMCX connector. In addition, when pulling the MMCX connector on the cable side, it is possible to accidentally pull the cable part and prevent the cable disconnected.

Ear hook (with lock mechanism) to eliminate cable touch noise

The ear hook is useful for reducing touch noise, and the unpleasant sound (cable touch noise) generated by touching the cable and body when walking is dramatically reduced. Our conventional ear hooks are more slim than general ear hooks, featuring the comfort of forgetting to hang it, with no foreign body feeling compared to cables with wires and resin. This time, a new cable lock mechanism has been added.

Different axis colored earpieces that make it easier to make left and right discrimination

The MMCX connector is a high -precision owned product. The high -purity OFC silver coat cable that gives the sound field is a jointly developed product with Junko -sha, which is famous for developing and manufacturing a cable for the supercomputer "Kyoto", which pursues the transmission speed of the signal. The insulation coating is a material PFA fluorine polymer, which has a large know -how under the Junfron brand and has a large know -how, and is the lowest dielectric rate. PVC is adopted to increase flexibility in the bean coat. It realizes surprising flexibility, is extremely easy to use and does not cause touch noise. In addition, for the MMCX plug that is likely to break the line and the 3.5mm mini -plug part, the specification that usually passes in the bend test of about 5,000 times, the specification that can withstand more than 50,000 bend tests. * Jun Kohosha: Developed and manufacture special cables that require high technical capabilities, such as high -speed coaxial cables that boast the world's fastest transmission speed of 95 % of light speed, ocean space, medical fields, cables in power plants, etc. I am doing the Japanese Junko company. Junko's cable is often called by the brand name Junfron, and has been greatly trusted by engineers who need special use cables.

Exchanged dust filter

The opening part may be dirty due to earwax, etc. of the stuffyer part. In A8000, the dust filter can be exchanged by the customer, and a dust filter is attached to the product. * Since the product is shipped with the dust filter installed in advance, it is not necessary to have the customer install it separately when opening a new one. If the dust filter is dirty after using it for a while, please replace it with the attached dust filter yourself. Please refer to the instruction manual for the replacement method. []

Aluminum carry case

The opening part may be dirty due to earwax, etc. of the stuffyer part. In A8000, the dust filter can be exchanged by the customer, and a dust filter is attached to the product. * Since the product is shipped with the dust filter installed in advance, it is not necessary to have the customer install it separately when opening a new one. If the dust filter is dirty after using it for a while, please replace it with the attached dust filter yourself. Please refer to the instruction manual for the replacement method.