"Hexagon" Ring Iron Headset-Listening to Feiao FH9

, after both its moving coil and moving iron series have flagship products close to 4000 yuan, the coil iron series, one of the richest existing products in the Feiao earphone series, has finally filled the vacancy at this price in the near future-this is the Feiao FH9 coil iron earphone that I will try out below. As Feiao's flagship iron earphone, how many units do you guess it has?

Product Specifications

wearing way: around the ear in the ear

unit type: 13.6mm DLC diaphragm moving coil unit (low frequency)

Lou's custom composite moving iron unit DFK (intermediate frequency)

Lou's composite moving iron unit SWFK-31736 (high frequency)

frequency response range: 10Hz ~ 40kHz

horn impedance: 18Ω@ 1kHz

headset sensitivity: 108dB@ 1mW

maximum power: 100mW

line change interface: MMCX

Wire Type: High Purity Single Crystal Silver Wire

connection line length: about 120cm

single weight: 12.8g

reference price: 3999 yuan

New Design

"titanium" has a taste

Although there are more and more earphone products under Feiao, each product can feel that it has taken effort in modeling design, and there is no simple doll. As the current flagship product of the FH series, FH9 naturally has its own personalized style. Although it is still a male-like design, Feiao is pursuing a more integrated feeling in the shape of FH9.

the vertical direction of the headphone cover as the axis, from multiple angles it has a nearly seamless overall look. The seam between the front and rear cavities will not be found until it exceeds 45 degrees, and it will not be visible until it is closer. A little further away, the seam will be hidden in the uniform color of the shell. Touch with your hand and you will find that there is almost no difference on both sides of the seam and the workmanship is good.

FH9 has three slots, one long and two short in a symmetrical layout. It can be seen that there are dense holes in the air guide network, visible FH9 also uses a semi-open cavity. This design is beneficial to relieve the air pressure in the ear, eliminate the pressure of the eardrum, and also help to improve the low frequency elasticity. FH9 weighs only 12.8g, but it has obvious falling feeling in hand, because it uses pure titanium alloy ear shell cavity. To make a digression, I recently bought some outdoor equipment because of into the pit Glamping (style camping), among which titanium is used as raw material. Titanium has high strength and good corrosion resistance, so it can be made very thin and the finished product is light. The same outdoor products, with titanium as the material than aluminum alloy, stainless steel is much more expensive.

back to FH9, due to the density, strength, corrosion resistance and other characteristics of titanium, so the application in the earphone cavity can effectively reduce the cavity resonance, effectively suppress harmonic generation. However, due to its high hardness, titanium is quite difficult to process. Feiao uses pure CNC to process each shell on FH9. A CNC can only produce 6 pairs of ear shells a day, which shows that it is not easy to come.

FH9 has two color matching of "titanium empty gray" and "titanium crystal black". The titanium version is the natural color of titanium alloy and has not been colored by any chemical process. The black version is colored by PVD after being polished into a mirror surface by hand. The titanium version of the FH9 also has a feature that it can always maintain its own tone at room temperature without problems such as oxidation and discoloration. The titanium version in our hands not only has the unique hard texture of metal, but also feels delicate to the touch. The visual effect is a matte effect with a little metallic luster.

Three interchangeable designs

find the right voice

FH9: the sound nozzle position can be changed for audio filter, the MMCX interface can be changed for earphone cable, and the standard earphone cable can be changed for plug. In fact, they are all familiar faces on Feiao headphones. According to the positioning of headphones, the three designs can be changed or appear at the same time, or have one or two. The MMCX interface is almost standard on Feiao headphones. The expanded MMCX interface adopted by FH9 has good firmness after connecting with the earphone cable. However, there is also the problem that it is difficult to remove by hand, so FH9 also comes standard with MMCX quick-release piece, which makes it easy to replace the earphone cable.

FH9 comes standard with a eight-strand 224-core Litz structure high-purity single crystal pure silver wire. The MMCX end of the earphone wire is made of metal and adopts elbow design, which is more ergonomic and more comfortable to wear. At the same time, the earphone line adopts the design of in-line replaceable plug, and comes standard with 2.5mm balanced, 3.5mm single-ended and 4.4mm balanced plugs. The quality of this headphone line itself is very high, and the replaceable plug design can adapt to different input devices, which is completely enough for many users.

In the sound mouth position of FH9, the audio filter can be replaced by screwing. It comes standard with 3 pairs of audio filters, which correspond to enhanced low-frequency, balanced tone, and high-frequency delicate audio characteristics. In order to make it easier for users to identify different audio filters, Feiao has also set ring signs in different colors on them. It can be said that it is not difficult for users to find their favorite sound style through the arrangement and combination of the three interchangeable designs of FH9. At the same time, it also gives it the foundation to adapt to different music types.

Gathering "Unit 7"

summon good sound

▲ Pictures from Feiao Official

, as the flagship of Feiao's current circle iron series, FH9 has the largest configuration of six iron and seven units in a circle. Not only the quantity, the quality of the unit is also worth mentioning. FH9 for the first time equipped with Feiao second generation of independent research and development of 13.6mm DLC diaphragm low frequency moving coil. It re-adjusts and designs the magnetic circuit structure of the moving coil unit, and the magnetic density is 20% higher than that of the first generation, which can provide better dynamic response. The DLC diamond material of the diaphragm dome has the advantages of high rigidity, high resistance coefficient and light weight, and has obvious progress in transient response and reducing nonlinear distortion. The six moving iron units carried by FH9 are all from Lou's. The high frequency adopts Lou's classic SWFK-31736 moving iron unit, which is located at the sound mouth and close to the eardrum to ensure the ductility and resolution of the high frequency. The intermediate frequency part is developed by Feiao and Lou Shi in depth and jointly customized composite moving iron unit.

▲ Pictures from Feiao Official

In addition to making an issue of unit configuration, FH9 also applied Feiao S.Turbo supercharged bass technology. It enhances the bass effect through the shape of the turbine by using the sound wave guiding characteristics, and enhances the depth and vigorous feeling of diving at low frequencies. At the same time, it can filter the excess medium and high frequency information of the moving coil to ensure that the low frequency and medium and high frequency timbre can be more smoothly connected. Feiao also designed a notch device on the cavity of FH9 to eliminate the harmonic resonance generated by the cavity, sound tube and ear canal to suppress the generation of dental sound.

audition experience

16 pairs of earplug sets are provided in the accessories, including sponge sets, low frequency sets, equalization sets, vocal sets, SpinFit sets, and double sets. Each type has 2 or 3 pairs. I use the default SpinFit set to experience the comfort of the FH9. Although it is a metal cavity, the delicate surface process still brings a good skin-friendly feeling. The inside of its cavity can be well fitted with the ear, and the depth of the earplug sleeve into the ear is also moderate. After wearing, from the ear to the ear canal, there is a sense of fullness, but it does not feel oppression, especially the SpinFit headphone cover brings a good passive noise reduction effect. In a relatively quiet indoor office environment, the crisp sound of tapping the mechanical keyboard becomes convergent, even close to the effect of wearing active noise reduction headphones, which can create a quieter environment for listening.

replace the earphone cable with a 4.4mm balance connector and conduct audition under the equalization filter. The connection between FH9 three frequencies is natural and smooth, and there is no sense of listening. It is accurate in the restoration of timbre, with a hint of imperceptible warmth, adding a few minutes of listening taste. On its own multi-unit pure moving iron earphone, Feiao suppressed the bad "iron taste" such as "dry, sharp and sharp" by customizing Lou's unit. FH9 not only has a customized Lou unit in the intermediate frequency, but also uses a large-size DLC diaphragm low-frequency moving coil in the low frequency part, which is naturally more comfortable. The characteristics of high resolution and good transient of moving iron unit are well displayed.

Specifically, the second-generation DLC diaphragm low-frequency moving coil + S. The "combination fist" effect of Turbo + semi-open cavity is obvious, and FH9 has a low-frequency performance that is easy to notice. A large amount of sense and strong elasticity, the whole low frequency generous solid. It does not make the listener feel that this is an earphone with a medium and low frequency trend, but under the general mentality that the low frequency of HiFi earplugs is not as demanding as the medium and high frequencies, the low frequency performance is pulled up to the same position as the medium and high frequencies, thus achieving a real "three-frequency equalization". Its low frequency can create enough atmosphere and wrapping feeling in the music, but at the same time it will not appear cloudy or boom head. This kind of feeling was quite obvious when listening to "Loser" by Mijin Xuanshi. The continuous low-frequency rhythm in the accompaniment has a strong sense of presence but does not rob the play. Moreover, the semi-open cavity is really obvious for the relief of ear pressure. Even if the passive noise reduction is so excellent, the ear canal feels relaxed when listening to music and is not tired after listening for a long time.

FH9 is full and real for intermediate frequency vocals, with a slightly forward position and a certain sense of ear licking, but it is not too greasy or oppressive. It does not deliberately protrude the human voice outside the accompaniment, but on the basis of maintaining balance, it makes the "saturation" of the voice higher and improves the hearing tolerance. It is also worth mentioning that it has good control over dental sounds. Even if I listen carefully to the songs of Liang Jingru and Faye Wong, I will not obviously feel the influence of dental sounds on the overall listening sense.

FH9 has a good dynamic performance, and the sense of listening is clean and neat. The presentation of details is rich and real, with high density. When listening to solo music, the timbre and charm of instrumental music are displayed incisively and vividly, and at the same time, you can feel the full shape. In the performance of extremely high frequency, it is more prominent and flexible, and resolves some edges and corners, burrs, which will not affect the analysis of high frequency, but make listening more comfortable. FH9 has a wide sound field in similar earplugs, and it is relatively open in all directions. Echoing it is the accurate positioning and imaging of each part of the sound field. Even if you use it to listen to some larger music, you can easily get a sense of presence and experience the fun of capturing instrumental music in different positions.

written at the end.

experience, my feeling is that FH9 has more obvious omnivorous attributes than Feiao's own flagship headphones with the same price. It is not the kind of headset that makes you feel amazing in some aspects, but if you listen carefully, you will find that it does a good job in every point, and you can't find obvious shortcomings. It is definitely a "Hexagonal Warrior". At a price of less than 4000 yuan, FH9 is worth listening.

Author:Microcomputer Official Microblogedited at 05-05 15:09

web site:https://weibo.com/ttarticle/p/show?id=2309404765782449193001