Open the Balance Door and Feel the Chemical Reaction between Feiao X7 Mark II Player and F9 Headset

, at the previous Feiao new product launch conference, although Feiao released many new products at one go, if I were to evaluate the importance of the products, the most important ones are undoubtedly these two-Feiao's new generation flagship X7 Mark II player is of course the most important new product at this launch, while F9 Ripple Headset is also a product that I think is very important.

the former needless to say, on the basis of the success of the first generation X7, Feiao can come up with such a product to enhance its position in the portable music player market above 4000 yuan, while the latter is Feiao's further attempt in the earphone ring. The three-unit ring iron matching and the price of less than 700 yuan all make people look forward to its performance. So I think I might as well put these two important new products together this time, not only to experience their respective characteristics alone, but also to see what kind of chemical reactions will occur when they are combined.

X7 Mark II can be said to be a combination of Feiao X5 III and the previous generation X7. In terms of the overall design style, X7 Mark II continues the design language of Feiao's new generation of portable music players since X5 III. The recognizable elements such as "Feiao Red" and 45 string lines can be found in X7 Mark II. The asymmetrical body, the corner transition full of edges and corners and the textured metal shell also make it stand out from all the portable music players on the market. If the big mold comes from X5 Ⅲ, then X7 Mark Ⅱ inherited from the previous generation X7 from the design of replaceable ear module.

▲ "Feiao Red", which has become a design element of Feiao family, appears at the power switch at the top, and the interface next to it is 3.5mm line/coaxial/optical fiber output port.

▲ The standard AM3A earphone module provides a 3.5mm earphone interface and a 2.5mm balanced earphone interface. The Micro USB interface in their center can not only be used for charging and transmitting data, but also can be matched with Feiao's K5 base to form a set of desktop decoding earphone system with more complete functions.

Among the users who buy portable music players at this price, there should be many fans who like to toss, and the design of replaceable modules undoubtedly enhances the playability of X7 Mark II. More kindly, X7 Mark II is compatible with all the ear modules of the previous generation X7, and old X7 users with multiple ear modules can seamlessly transition to X7 Mark II. Moreover, considering that it is compatible with Feiao's own K5 base, it also provides two different side decorative blocks to solve the problem of base compatibility. It can be said that Feiao has spent a lot of effort on the compatibility of X7 Mark II's previous supporting products.

▲ There is another place on the side where Feiao's characteristic design is applied. The 45 string pattern on the volume knob is not only highly recognizable, but also commendable in actual appearance and operation hand feeling. The volume control keys and playback control keys on both sides also feel good in operation.

X7 Mark II maintains a 3.97-inch full-fit touch IPS screen. Due to the addition of "chin", it does not feel like the front of the screen like Feiao X5 III. However, the proportion of the screen occupying the front of the body is still not small and the visual effect is good. The memory was increased to 2GB, which greatly improved the smoothness of the system. In the subsequent experience, I obviously felt its progress in this area.

▲ X7 Mark II supports dual-MicroSD card expansion, with a maximum capacity of 256GB × 2. It adopts the same card holder design as mobile phones and has good workmanship and integrity.

are worth mentioning on X7 Mark II. One of the most important DAC chips, X7 Mark II, uses the high-end model ES9028 PRO in this series, which has 8 independent audio lines with a signal-to-noise ratio of 129dB. It uses three independent active crystal oscillators to be responsible for DSD and 44.1kHz sequence, 48kHz sequence and 384kHz respectively. Through matching synchronization, jitter is reduced, clock accuracy is improved, and sound reduction is more conducive. The internal process matched with it is also excellent. The number of shielding covers on the PCB has reached 7, and the main control and operation part adopts double-layer shielding measures to ensure the stability of audio performance.

in the standard AM3A earphone module, it has balanced, single-ended dual earphone output. The op amp chip uses the AD8620 and is matched with the earpiece chip OPA926 customized for X7 Mark II. For users who will not toss the earpiece module, this configuration is enough to meet the matching needs of various earphones.

▲ X7 Mark II randomly gave away one silicone sleeve and one leather sleeve, and there were no fewer tools such as picking up pins and screwdrivers used to disassemble and assemble the ear module. Due to its support for QC2.0 and MTK PE fast charging technology, Feiao also specially sent a fast charging charger. Like X5 3rd generation, fast charging charger will only be given to products sold in China.

Feiao has not worked as deeply in the earphone market as portable music players before, and most of the earphones introduced are entry-level products. But on the latest F9, I saw the signal of Feiao's power in the earphone market. F9 has another name-"Ripple", which is shaped like its name. The shell of F9 uses bionic design, which has a visual effect like water dripping into water and arousing ripples. The overall design is quite special.

I received the black version, Feiao also provided it with a red optional color scheme. I think the latter will be more selective in visual effects and suitable for young people who want a different product. Not only is the shape special, the F9 shell is also made of aluminum alloy, through CNC process, and through manual polishing, sandblasting, anodizing and other processes. Judging from the actual effect, F9 not only has a strong metal texture, but also has a little dark luster. It will not appear too cold, feel delicate, and have a good craftsmanship.

▲ Three pairs of balanced and bass earplug covers are included at random. In addition, a waterproof and moisture-proof storage box is also standard.

In addition, Feiao also makes full use of the reinforcing ribs formed by this shape, which can maximize the use of the inner cavity while ensuring the strength, and helps to eliminate the resonant standing wave. In order to increase the playability of F9, Feiao adopts the interchangeable line design of standard MMCX interface, and comes standard with a 2.5mm balanced earphone line and a 3.5mm single-ended earphone line with line control in the accessories. The former is suitable for matching with a portable music player with balanced output, while the latter is convenient for users to use it on mobile devices such as mobile phones and tablets, and can also make phone calls conveniently. In the actual line change process, I feel that the combination is relatively tight, and it will be relatively easy to pull it off by using fingernails to buckle the gap of the joint.

▲ F9 adopts replaceable wire design, and the standard MMCX interface is convenient for users to replace various wires.

▲ F9 comes standard with a 2.5mm balance wire and a 3.5mm single-ended wire control wire, which is sufficient for users who do not like tossing and turning.

, let's take a look at the hardware configuration of F9. It adopts a hybrid three-unit design of one moving coil and two moving irons, which is relatively rare at this price. The diameter of the moving coil is 9.2mm, which is mainly responsible for medium and low frequency output, while the two moving iron units are responsible for driving high frequency and extremely high frequency. Among them, the moving coil unit uses PEK polymer nano-composite diaphragm, which is mainly characterized by strong toughness, fast speed and light weight.

In order to better connect the moving coil and the moving iron unit, Feiao chose a physical and acoustic double-frequency design scheme, with a frequency response range of 15Hz ~ 40Hz, which has passed the Audio certification of Japan Audio Association, commonly known as "small gold standard. In order to put down three units in a small cavity, Feiao adopted a parallel placement method on F9, which not only effectively utilized the internal space, but also solved the problem of sound connection.

, let's talk about how X7 Mark II brings me in actual operation. In terms of software, Feiao has deeply optimized the Android system. This system, which was first used on the previous generation X7 and received many favorable comments, has also been transferred to X7 Mark II. However, by comparison, it can be seen that Feiao has further optimized the UI, which not only improves the visual effect, but also improves the design related to user ease of use. Feiao not only brings customized UI interface to users on X7 Mark II system, but also adds three new themes to support users to switch at any time.

, it is reported that Feiao will continue to add more topics in the future, and users who have high requirements for the appearance of the operating system can be satisfied. As a Android smartphone user, I did not encounter any problems when operating X7 Mark II. The various operation logic is no different from the smartphone, and it is easy to get started.

▲ X7 Mark II operating system main interface is very similar to Android smart phones, so it is not difficult to get started.

In the system, we can see that X7 Mark II has 64GB of built-in storage space, which is enough for most users. However, Feiao has not forgotten that there are more enthusiasts who need it. X7 Mark II has two MicroSD memory card expansion slots on one side of the body, of which the single card slot supports a maximum MicroSD of 256GB and the two can be expanded to 512GB together.

has built-in Feiao Market App in the X7 Mark II system, which includes various online music apps, including Baidu Music, Netease Cloud Music, and various commonly used apps that we are familiar with. Users can install these applications as needed.

▲ Like smartphones, users can also find various commonly used apps in Feiao Market and install them in X7 Mark II.

In addition, X7 Mark II still has a pure tone playback mode, which can be switched with one key in the drop-down menu, which is very convenient. As a music player with Android system, Bluetooth function is naturally indispensable. X7 Mark II supports Bluetooth 4.1 technology and provides support for aptX. I tried to connect the Bluetooth speaker with it, which is no different from connecting the Bluetooth speaker with my mobile phone. It is very convenient.

▲drop-down menu, you can switch Android/pure tone mode, output mode and high and low gain with one key. Wi-Fi and Bluetooth functions can also be switched here.

▲ X7 Mark II's player lyrics and cover can be automatically adapted, which is almost the same as our commonly used music App.

F9 leaves the factory, the left and right units are not connected, so it is very convenient to install wires, but it is really troublesome to unplug wires when replacing wires. As mentioned earlier, I will not say much here. F9 adopts the design of wearing around the ears. Needless to say, the actual solidity of wearing is needless to say. What is more worth saying is that the softness of the part around the ears is good. The result is that the wearing comfort of this part is very good and the ears will not feel obvious burden.

▲ The part around the ear is relatively soft, which brings good wearing comfort.

the earphone part, the 45-degree oblique in-ear design can enter the ear canal very conformably. The medium earplug I chose can just fill up without too much pressure on the ear canal and has good comfort. The cavity just fits the auricle, the only disadvantage is that it feels a little full, and the auricle will feel a certain pressure.

▲ 3.5mm single-ended earphone line has rich wire control functions. In addition to controlling the playback and volume adjustment of songs, it can also call. It is suitable for use with mobile phones. The actual operation feel is not bad.

, on the whole, F9 is well worn from the inside to the outside, even better than many sports headphones. Except that the auricle will feel filled with a slightly larger shell, the comfort of the rest is worthy of praise. Let's talk more about the operation experience of single-ended online wire control. Its main body adopts an integrated design and is made of metal material, which makes it feel great. Relatively speaking, the texture of the three plastic keys is a little worse, but fortunately their hand feel is neat and good operation feel is maintained.

, in the audition, my focus is naturally on the matching of X7 Mark II and F9. Of course, in order to test the quality of X7 Mark II and the adaptability of earphones more comprehensively, I also added two other earphones-Sennheiser HD600 earphones and HIFIMAN RE2000 flagship earplugs to the audition.

Let's start with the combination of X7 Mark II and F9. From the beginning, I compared the difference between F9 and X7 Mark II under the balanced interface and the single-ended interface. I have to say that the level of F9 sound quality under the balanced interface has an audible improvement compared with the single-ended use mode. The most obvious difference is that X7 Mark II under the balanced interface has stronger control over F9, which can capture various subtleties in music. At the same time, the overall listening feeling will appear more three-dimensional and have richer levels. Therefore, for qualified users, I think whether X7 Mark II is used with headphones or F9 is used with other music playing equipment, my suggestion is to choose headphones with balanced interface and music playing equipment with balanced output, so as to give full play to the potential of the two. Therefore, in the whole audition process later, I chose the combination of X7 Mark II balanced output to F9.

Under X7 Mark II, F9 embodies a relatively calm and positive sound style, and the unit configuration combined with ring and iron should be the most important factor in this style. The application of the two moving iron units makes the voice of F9 reflect the style trend of emphasizing analytical power, especially the high-frequency part can obviously feel the clear and pleasant display, and the extension is natural and smooth. Even as the high-frequency part of violin solo music gradually goes up, there will be no rough feeling at the highest point. The moving coil unit makes up for the problem that the moving iron is easy to sag in the intermediate frequency. It does not process the sound too much, but focuses on the restoration of the human voice quality. I can hear many details of the sound. And whether it is a thick male voice or a gentle and sweet female voice, I think it can show the standard it deserves. The singer's position is not too forward, and it is not so easy to feel tired after listening for a long time.

F9 gave me some surprises. Whether it is the orchestration of music such as "Ferry" or the majestic low frequency under the large compilation such as "Bran's Poetry", F9 shows a certain degree of strength and flexibility. The former allows me to capture the details of drum skin vibration, while the latter does not feel bored and reflects a good dynamic performance. Of course, the relatively excellent low-frequency performance is based on the level of products at the same price, and cannot exceed the physical limitations brought about by its own volume and materials. It is still in the category that can be imagined.

When X7 Mark II is matched with F9, I don't think it has fully realized its potential. After all, the difference in positioning between the two determines that the ceiling of the latter's sound quality level is still a long way from the ability of X7 Mark II. Therefore, matching HIFIMAN RE2000 and Sennheiser HD600 can better see how much energy X7 Mark II is. First of all, let's talk about the combination of X7 Mark II and RE2000. RE2000 is not a flagship earplug that is difficult to push. under X7 Mark II, I think it has exerted a large part of its ability. The resolution under this combination is outstanding, and the ears can capture quite a lot of sound details. It can be felt that whether it is the style of headphones or players, Feiao is continuing a positive path.

is the same on F9 and X7 Mark II. For users who prefer warm human voice, its unmodified intermediate frequency may make people feel a little cold, but the more flexible dynamic performance and the resolution of various details will bring users a richer sense of hierarchy and the sound will become more vivid. The low frequency of X7 Mark II also follows the neutral style of medium and high frequency. The level of control and sound is in the important position. The rebound of low frequency is well done, and the diving can reach a certain position. The sense of quantity will not be strengthened too much.

worth mentioning that the output of X7 Mark II headphones has high and low gains to choose from. I prefer to use the high gain mode, because in the headphones matched this time, the sound in this mode will be more audible. Looking at the situation with HD600, X7 Mark II, as a portable music player, unexpectedly can bring HD600, which is recognized as not easy to push, to a level that can still be heard. The sense of space and hierarchy of sound has come out, but it has not yet reached the point of full expansion. On the whole, I think the AM3A earpiece module standard for X7 Mark II is mainly designed for earplugs and low-resistance earphones, so although it can have normal hearing feeling when matching with large earphones, it cannot release more energy of earphones.

the end of the experience of X7 Mark II and F9, you can clearly feel the energy spent by Feiao on "balancing" popularization. Whether you are your flagship X7 Mark II player or F9 headphones with several hundred yuan, "balance" is a standard. As far as my actual experience is concerned, when F9 of balanced wire is matched with X7 Mark II of balanced interface, their sound quality level is audible. From top to bottom, the simultaneous promotion of "balance" from each product line reflects Feiao's intentions in this regard.

returning to the product, X7 Mark II can be said to be an excellent answer sheet further improved by Feiao on the basis of the previous X7 attempt. The new generation of family style has pushed Feiao's new generation of portable music players to a higher level in terms of visual effects and technological standards. I think X7 Mark II already has a level that can compete with foreign brands in this respect. In terms of internal components and technology, I think Feiao is completely "stacking" on X7 Mark II. High-quality components and some painstaking workmanship can make people feel Feiao's sincerity. The addition of Android system has improved the expansibility of the product, and its rich functions make it quite playable. As a quite versatile product, X7 Mark II has its own advantages even in the face of many strong players at the same price on the market.

F9 is a work that Feiao has tried headphones one after another before, which really makes me feel that all aspects show better maturity. This can be reflected from design language, actual wearing experience to sound quality level. Also at its price, the configuration of the three units of moving iron has allowed it to leave behind a number of rivals. By the way, Feiao recently introduced the F9se with non-interchangeable line design, and I also learned from the manufacturer that it still maintains a 1-circle 2 moving iron unit, but the F9 PRO, which uses Lou-type composite double-acting iron unit for moving iron, is also expected to go on sale in November. It can be seen that Feiao has made F9, a highly mature product in all aspects, into a series to take care of more music lovers with different needs.

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