After its dynamic coil and moving iron series have a flagship product of nearly 4,000 yuan, the circle iron series, one of the richest existing products in the Fei'ao headphone series, has finally filled the gap at this price point in the near future - this is the Fei'ao FH9 circle iron headphones that I will audition below. As FeiO's flagship hoop iron headphones, guess how many units it has?
Product specifications
Wearing style: Ear-to-ear
Unit Type: 13.6mm DLC Diaphragm Dynamic 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
Headphone sensitivity: 108dB@1mW
Maximum power: 100mW
Wire change interface: MMCX
Wire type: High purity single crystal sterling silver wire
Cable length: Approximately 120cm
Unit weight: 12.8g
Reference price: 3999 yuan
New design "Titanium" has a taste
Although feio's headphone products are more and more, each product can feel that it has taken a lot of effort in terms of styling design, and there is no simple matryoshka doll. As the current flagship product of the FH series of circle iron, FH9 naturally has its own set of personalized styles. Although it is still a male-like design, Fei'ao pursues a more integrated feeling in the shape of the FH9.
With the vertical orientation of the headphone cover as the axis, it has an almost seamless overall look and feel when viewed from multiple angles. After more than 45 ° will find the seam between its front and back cavity, you have to get closer to see, take a little farther the seam and hide in the uniform color of the shell. If you touch it with your hand, you will find that there is almost no difference between the two sides of the seam, and the workmanship is good.
The FH9's cover has three slots, one long and two short in a symmetrical layout. It can be seen that there is a dense air conduction network with small holes inside, and it can be seen that FH9 also uses a semi-open cavity. This design helps to drain air pressure in the ear, eliminates the feeling of eardrum compression, and also helps to improve low-frequency elasticity. The FH9 alone weighs only 12.8g, but it has a distinct drop feel in the hand, which is because it uses a pure titanium alloy ear shell cavity. As an aside, recently I bought some outdoor equipment because of the relationship between Glamping (style camping), including titanium as a raw material. Titanium has high strength and good corrosion resistance, so it can be made very thin and the finished product is lightweight. The same outdoor products, titanium as a material is much more expensive than aluminum alloy, stainless steel.
Speaking of FH9, due to the density, density, strength, corrosion resistance and other characteristics of titanium, it can effectively reduce the cavity resonance and effectively suppress harmonics when applied to the headphone cavity. However, it is also due to the high hardness, titanium processing difficulty is quite large, Fei'ao in FH9 is the use of pure CNC processing of each shell, a CNC can only produce 6 pairs of ear shells a day, which is not easy to come by.
FH9 has "titanium empty gray" and "titanium crystal black" two colors, titanium color version is the natural color of titanium alloy, without any chemical process coloring treatment, black version is hand polished into a mirror, through PVD coloring. The titanium version of FH9 also has a feature, that is, it can always maintain its own hue at room temperature, and there will be no problems such as oxidation discoloration and discoloration. The titanium version in our hands has both the tough texture of metal and the delicate touch, and the visual effect is a matte effect with a bit of metallic luster.
Three interchangeable designs
Find the voice you want
There are three interchangeable designs on the FH9: a reversible audio filter at the nozzle position, an interchangeable headphone cable at the MMCX interface, and a interchangeable plug with a standard headphone cable. In fact, they are all familiar faces on Fei'ao headphones, according to the positioning of the headphones, three interchangeable designs or simultaneous appearance, or have one or two. The MMCX interface is almost standard on the VULT headphones, and the expanded MMCX interface used in the FH9 is very strong after connecting with the headphone cable. However, there is also a problem that it is difficult to remove by hand, so the FH9 is also equipped with MMCX quick release film as standard, making it easy to replace the headphone cable.
The FH9 comes standard with an eight-strand 224-core Litz structure high-purity single crystal sterling silver cable, and the MMCX end of the headphone cable is made of metal and has an elbow design, which is more ergonomic and more comfortable to wear. At the same time, the headphone cable adopts the design of in-line interchangeable plug, and is equipped with three kinds of plugs: 2.5mm balanced, 3.5mm single-ended and 4.4mm balanced. The quality of the headphone cable itself is very high, and the interchangeable plug design can adapt to different input devices, which is completely enough for many users.
At the nozzle position of the FH9, the audio filter can be replaced by screwing. It comes standard with three pairs of audio filters, which correspond to the audio characteristics of enhanced low frequencies, balanced tones, and high frequencies. In order to make it easier for users to identify different audio filters, Fei O also set up ring logos of different colors on them. It can be said that through the arrangement and combination of the three interchangeable designs of FH9, it is not difficult for users to find their favorite sound style, and it also gives it a foundation to adapt to different music genres.
Assemble "7 units"
Summon good sounds
▲The picture is from the official fei ao
As the flagship of The current circle iron series of The FH9, the configuration of the FH9 one-lap six-iron and seven-unit unit can be regarded as the most in the Fios headphones. Not only is the quantity large, but the quality of the unit is also worth mentioning. For the first time, the FH9 is equipped with a low-frequency dynamic coil of 13.6mm DLC diaphragm independently developed by The Second Generation of Faireo. It has readjusted and redesigned the magnetic circuit structure of the moving coil unit, and the magnetic density is increased by 20% compared with the first generation, which can provide a better dynamic response. The DLC diamond material at the top of the diaphragm dome has the advantages of high rigidity, high drag coefficient, light weight, etc., and has also made significant progress in transient response and reduced nonlinear distortion. The six moving iron units on the FH9 are all from Lou's. The high frequency adopts Lou's classic SWFK-31736 moving iron unit, located in the nozzle position, close to the eardrum, to ensure the ductility and resolution of the high frequency. The intermediate frequency part is deeply developed by Fei Ao and Lou Shi, and the joint customized composite moving iron unit is responsible.
▲The picture is from the official fei ao
In addition to making a fuss about the unit configuration, the FH9 also applies The Vion S. Turbo Turbo Turbo Bass Technology. It enhances the bass effect by using the sonic guiding characteristics and enhancing the bass effect through the shape of the turbine, improving the depth and exuberance of the low frequencies. At the same time, the excess medium and high frequency information of the dynamic coil can be filtered to ensure that the low frequency and the middle and high frequency tones can be more smoothly connected. Fei O also designed a notch device on the cavity of FH9 to eliminate the harmonic resonance generated by the cavity, the sound tube and the ear canal to suppress the production of tooth sound.
Audition experience
There are 16 pairs of earbud sleeves available in the accessory, ranging in types from sponge sleeves, low-frequency sleeves, equalization sleeves, vocal sleeves, SpinFit sleeves, and double-section sleeves, each with 2 or 3 pairs. I experienced the wearing comfort of the FH9 with the default SpinFit case. Although it is a metal cavity, the delicate surface process still brings a good skin-friendly feeling. The inner side of its cavity fits well into the ear, and the depth of the earbuds is also moderate. After wearing it, from the ear to the ear canal, there is a sense of fullness, but it does not feel oppressive, especially the SpinFit headphone sleeve brings a good passive noise reduction effect. In a quieter indoor office environment, the crisp sound of tapping on a mechanical keyboard becomes convergent, even closer to the effect of wearing active noise-canceling headphones, creating a quieter environment for listening.
Swap the headphone cable with a 4.4mm balancing connector and audition under the equalization filter. The connection between the FH9 three frequencies is natural and smooth, and there is no sense of separation at all. It is accurate in its reproduction of the timbre, with a subtle warmth that adds a bit of an enduring taste. On its own multi-unit pure moving iron headphones, Fei'ao suppresses the bad "iron taste" such as "dry, sharp and strong" through customized Lou's units. FH9 not only has a custom Lou's unit for the intermediate frequency, but also adopts a large-size DLC diaphragm low-frequency dynamic coil in the low-frequency part, which is naturally more comfortable. The characteristics of the moving iron unit such as high resolution and good transient are well displayed.
Specifically, the "combination punch" effect of the second-generation DLC diaphragm low-frequency dynamic coil + S.Turbo + semi-open cavity is obvious, and FH9 has a low-frequency performance that is easy to notice. The large sense of volume and strong elasticity are combined, and the whole low frequency is wide and solid. It does not make the listener feel that this is a low-frequency headphone, but in the general mentality of the public that the low frequency of HiFi earbuds is not as demanding as the middle and high frequencies, the performance of the low frequencies is pulled up to the same position as the middle and high frequencies, and the "three-frequency equilibrium" is achieved in the true sense. Its low frequencies create enough atmosphere and wrapping in the music, but at the same time there is no appearance of cloudy or booming. This feeling is quite obvious when listening to Yonezu Genshi's "Loser", and the low-frequency rhythm that has been continuous in the accompaniment has a strong sense of presence but does not steal the scene. And the semi-open cavity is really obvious for the relief of ear pressure, even if the passive noise reduction is so good, the ear canal feels very relaxed when listening to music, and it is not tired for a long time.
The FH9 is full of real knots for mid-range vocals, slightly ahead, with a certain ear-licking feel, but not too greasy or too oppressive. It does not deliberately protrude the human voice out of the accompaniment, but maintains a balanced basis, so that the "saturation" of the vocals is higher and the listening is improved. It is also worth mentioning that it has a good control over the tooth tone, even if I specifically find Liang Jingru and Faye Wong to listen carefully to many songs of the "tooth tone heavy disaster area", it will not obviously feel the impact of the tooth tone on the overall listening.
The high frequencies of the FH9 have a good dynamic performance, and the sound is clean and clean. The details are rich and realistic, the density is large, and the timbre and charm of the instrumental music are vividly displayed when listening to the solo music, and the full shape can be felt at the same time. In the performance of extremely high frequencies, it highlights the supple ductility, and dissolves some edges and glitches, which does not affect the analysis of high frequencies, but makes the listening more comfortable. The FH9 has a wide soundstage in the same type of earbud, which is pulled out in all directions. Echoing this, it accurately locates and images the various parts of the soundstage, and even if you listen to some larger music, you can easily get a sense of presence and experience the fun of capturing instrumental music in different positions.
Write at the end
After the experience, my feeling is that compared with Fei'ao's own dynamic ring and dynamic iron flagship headphones at the same price, the omnivorous attribute of FH9 is more obvious. It's not the kind of headphone that makes you feel amazing in some ways with one ear, but if you listen closely, you'll find that it does a good job at every point, can't find obvious shortcomings, and is definitely a "hexagonal warrior". At a price of less than 4,000 yuan, it can be done without bias and has a good voice performance in all aspects, and FH9 is worth listening to.