Feiao EM5 evaluation, will it be the peak of flat headphones?

will introduce to you a recently released flagship flat head, EM5 beryllium-plated diaphragm earphone from Feiao. EM5 is one of the few flat heads I evaluated. In fact, it has been restrained for a long time but I still decided to write something. The main reason is to look for excitement and see how many people are still paying attention to this thankless earphone type.

it is rather embarrassing to realize the status of flat-head headphones today. After all, it is a product of the last century. Now in-ear headphones have completely occupied the market, whether it is wearing, sound insulation, sound quality, technology, color value and other aspects. Far exceeds the limit of the old-fashioned flat-head headphones. Even if it is as strong as EM5, facing headphones of the same price, my heart is mostly a little empty. After all, there are fewer and fewer true love fans, and the days of flat headphones are getting harder and harder. So, in today's world of popularity, how about Feiao EM5, the flagship flat head that reaches the ceiling?

appearance:

let's talk about the appearance. To be honest, when I saw this earphone for the first time, I was very surprised. How did this thing look like this? It looks like a crooked lotus canopy with an extra stem. It looks very strange. As far as the appearance design is concerned, EM5 is undoubtedly unconstrained. It is completely separated from the plain shape of the flat-headed male model. The dark blue-gray transparent cavity is twisted into an unspeakable shape. At that time, I could not find a word to describe it. The reason why Feiao dares to challenge such a difficult technical action is entirely the courage given to it by 3D printing technology. The fourth generation DLP3D printing technology, integrated seamless molding, high-tech blessing rich willful. Ordinary earphones can easily distinguish beauty and ugliness, but EM5 simply has no way to start, so just don't evaluate the appearance, just replace it with one word: strange.

units:

For flat-head headphones, the moving coil unit in the cavity represents the core soul. The moving coil on EM5 is as simple as its appearance. It directly uses a large moving coil with a 14.2mm diameter beryllium plated composite diaphragm. Beryllium-plated diaphragm has the advantages of high rigidity, high resolution, low distortion, etc. As long as the tuning does not roll over, it is difficult to think bad. Therefore, even before you listen to EM5, you can still have a little expectation of its sound. At the same time, Feiao also equipped the large moving coil with a long-stroke structure to ensure the smoothness of the low frequency.

The EM5 parameters are left here: the impedance is 32 ohms, the sensitivity is 109dB, and the frequency response range is 20-20000Hz. The conventional data is not too extreme, so it should be better to make noise.

Low Frequency-The War of Flat Head

friends who have heard of flat headphones should not be unfamiliar with the biggest disadvantage of flat headphones, that is, low frequencies are easy to disperse. No way, the sound is like water, the gap between the flat head and the ear canal is so big, can you Hold it without flowing out? And just the low frequency is an essential and important element when listening to music. If a song does not sound low frequency or the low frequency is lower than normal, it is like drunk and walking lightly? Therefore, the in-ear earphone directly uses a closed catheter and earmuff to firmly lock the low frequency in the ear canal. The bass is better than the flat head and sounds more comfortable for a reason. Of course, I don't want to delve into which one is better here, but I 'd better return to the topic of flat head death: low frequency. So, what if you want to enhance the low frequency of the flat head? Either the original factory will enhance the low frequency signal, or honestly put a cover on the flat head headphones, but this thing is difficult to complete, want to balance the amount of low frequency is really very difficult, either the reverberation is too enough to sound stuffy, or the low frequency is not enough crazy to add volume to the explosion. The important thing is that the low frequency is not enough and the sound insulation is extremely poor, so it is completely impossible to take into account the daily use. If you buy such an expensive flat-head earphone, you can only listen to it at home. What's wrong with it? Listen to the big ears, and listen to the speaker. Is it not fragrant?

bass flute tube:

Therefore, in order to overcome the low-frequency effect of flat head, many high-end flat head earphones have made great efforts in cavity design. Of course, it does not rule out the reverse case of directly using public models to save trouble. To get back to the point, EM5 has spent a lot of thought on the structure of the earphone in order to deal with the phenomenon that the low frequency of the flat-head earphone is easy to leak. It is the "low frequency acoustic flute tube" that makes the appearance of EM5 fall. It is like an extra blood vessel inserted into the shell. Although it is a bit abrupt, the effect is still obvious. Careful observation shows that this unique tube is actually a V-shaped tube. At this time, thanks to 3D printing technology, it is really unrealistic for ordinary technology to play like this. What is the function of this tube? In fact, it is used to enhance the low frequency. The moving coil unit must have a vent hole to vibrate and sound normally. Of course, the key to the low frequency of the flat-head earphone is also that hole. The acoustic flute tube of EM5 is connected to the two air holes in the middle of the earphone handle, which is equivalent to two air holes extending the length of the body by half, greatly delaying the speed of low frequency loss and increasing the duration of low frequency residence. Therefore, this is the reason why the low frequency becomes vigorous. then, maybe some burning friends have to ask? if this hole is blocked, the low frequency will not run away at all? emm, not only will not run away, but also will not be produced.

speaking of this, have you ever noticed a little bit of the fun of fever? Thinking about the working principle of the equipment, trying it yourself, and confirming your own guesses one by one, is it not the fundamental driving force for us to burn around? If it's just a step-by-step, knowing it but not knowing why, it doesn't matter if the fever is extinguished.

wire:

has come to the metaphysics part again. At present, all HiFi earphones care about wires very much. Let's not discuss the specific sound bonus for the time being. Let's analyze the necessity of wires from the physical characteristics. The earphone wire used by Feiao EM5 is a genuine pure silver wire as shown in the figure. The conductivity of silver is stronger than that of copper, so the transmission efficiency is higher and the loss is lower. The sound may not be greatly enhanced, but at least it will not drag down. So, does the wire work? Of course. Even the standard 4-core pure silver wire of EM5 cannot be replaced directly, because it is directly welded on the positive and negative poles of the moving coil unit. Do you want to challenge your own hands-on ability? No warranty. Fortunately, EM5 has taken a different approach and equipped it with self-locking plugs, thus solving the urgent needs of 3.5mm, 2.5mm and 4.4mm plugs. I think for most players, adding 3 plugs to this line is enough to play.

However, the wire of EM5 also has slot points, that is, the material covered by the wire body above the splitter is too hard, while the 4-core woven wire body below the splitter is unusually soft. This makes me puzzled. When taking photos, I have the heart to die. It is really clear and strange. The only reasonable explanation is to strengthen the toughness of the upper wire and prevent accidental pulling and damage of the earphone wire. After all, it is better to weld directly on the unit or to make a safety point. Fortunately, in addition to forcing obsessive-compulsive disorder, the overall consumption is moderate.

sound evaluation ① No condom

I don't know how many people there are because the title was attracted. Although the title party is more popular, "you can be hi without a set" is indeed the EM5 I want to describe. Although it is a default fact that flat-headed plugs wear sponge sleeves to listen to songs, it also invisibly exposes a kind of helplessness. No matter how good the original design is, no matter how good the unit is, it still needs a pair of cheap sponge sets to assist? 3 points for R & D and 7 points for the set? I think I don't want the final credit to be attributed to the sponge sets after writing so many thousands of words. At the same time, people don't want to see such an evaluation that is not motivated. At the end of the day, I just want to check what level the latest flagship flat plug has reached, so the test without a condom must be written. This is the original intention and high hope.

, let's try the EM5 sound without a condom first. The first feeling is smooth, very transparent, very good transparency, excellent resolution, rich information, accurate positioning and three-dimensional image. In the three-frequency part, the mid-frequency human voice has a good texture, full but not rich, close to the ears and measured, with a moderate sense of distance, and the listening route is very charming. The high-frequency part of EM5 is very gentle, without any sharp stimulation, the string line sense is not strong, there is a certain weakening, but the high-frequency extension and overtone, as well as the unique open and bright feeling of flat headphones also make up for this point, personally think it is not a shortcoming.

, the low frequency part once again emphasizes that this is the low frequency of EM5 without a sleeve. The sense of quantity can only be regarded as sufficient. The low frequency dive is very solid. Although there is no surging feeling, it can also strike on the point well. At this time, the low frequency is not round and loose. The spread of the low frequency cannot achieve full-fledged diffusion, but is gathered in the middle, so that the two ends of the low frequency lack corresponding echo, which is caused by the relatively fast spread of the low frequency. The above is a comparison of the low-frequency hearing feeling of in-ear headphones. EM5 does not say that it can catch up with the horse, but it may not be able to reach a very ideal state even if it is a rocket. However, on the whole, the EM5 without a condom is worthy of the name of the flagship flat head in terms of the performance of the three frequencies and the overall sound direction. The sound is moist, delicate and pleasant, tepid, delicate and listening.

comparing other flagship flat heads, I will not name them one by one. EM5 is almost an ear improvement in all aspects, whether it is resolution, separation, image, expression, emotion of medium frequency human voice and low frequency dynamics. Moreover, EM5 has a larger sound field, a more mature sound foundation and, most importantly, a better push. It can almost be regarded as the flat-head earphone closest to in-ear hearing. EM5 without a condom is already very good. What about after wearing a condom? Will it get stronger?

sound evaluation ② Different sponge sleeves

EM5 comes standard with a three-box sponge sleeve, which is balanced, transparent, and low-frequency. In fact, it is nothing more than: normal thickness sponge sleeve, middle digging sponge sleeve, thickened sponge sleeve. As for why the thickness of the sponge cover can directly affect the sense of hearing? When I analyzed the low frequency of the flat-head earphone above, I have already explained it in the vernacular, and it is not difficult to understand a little divergence, right?

so many sets, let's start with the balanced type. When EM5 is balanced and there is no sound contrast, the medium and low frequencies obviously become much thicker, and the overall timbre adds a sense of warmth and density, which is most obvious in the mouth shape of human voice and the energy sense of low frequency. If there is no set of EM5 is a transparent route, then the balanced EM5 is of course a balanced route. The overall sound is very stable, and the standard warm three-frequency balanced style is pleasant to listen to and is finished. The enhancement of low frequency is very surprising. EM5 low frequency will have some pity when there is no set. Although it is good enough, it is still a bad breath. When the balance is set up, the low frequency will immediately stimulate the real strength. It is necessary to have strength, to dive and to have atmosphere. Isn't that enough? With the unique loose and natural listening feeling of flat-head headphones, the voice of EM5 is quite poisonous and highly recommended.

transparent earmuffs are actually more difficult to wear. This kind of sponge sleeve with a hole in the middle is easy to wear when wearing EM5, which will lead to sound deviation, especially in low frequency. Therefore, in order to obtain the best transparent EM5 hearing feeling, the premise is to wear the condom well, so as to feel at ease. After wearing the condom, the voice of EM5 is different from that of balanced type and EM5 without condom. When equalizing the set, the medium and high frequencies of EM5 are slightly dim, and the tension on the upper plate will converge, which is relatively mild as a whole. On the transparent sleeve, the difference between the medium and high frequency of EM5 and the non-sleeve is not big, but the thickness of the human voice and the enhancement of the low frequency are also obvious. In general, the transparent cover EM5 has more omnivorous sound, has the dual characteristics of agility and thickness, and can play well. Personally, I recommend this sponge cover.

, of course, is the low-frequency sponge sleeve. I will briefly summarize the sound. Compared with the balanced EM5, the sound is thicker, and at the same time, the medium and high frequencies cover up more, the sound is fuller, and the low frequencies are more impactful. Personally, I think the listening tolerance is not as good as the balanced and transparent sound, but the sound insulation is slightly strengthened, but it is more chicken ribs when going out. If you want to listen to some music with EM5, the low frequency set is a good choice.

after several rounds of comparison of different sponge sleeves, the voice of EM5 as a whole is beyond expectations. after all, the sound foundation when there is no sleeve is too good, so there will be no essential change when wearing a sleeve. However, matching different sponge sleeves can indeed match different listening preferences. As to whether the sound insulation can be improved, this is more subtle and requires brain release.

summary:

flat-head headphones are declining, it does not mean that they should be eliminated. If you really like the natural listening feeling of flat-head headphones, and you can tolerate the listening environment and do not pursue good sound insulation, then excellent flat-head headphones like EM5 are still very useful. First, wearing EM5 will hardly feel oppressive, and users who are picky also avoid in-ear pain. Second, EM5 is almost the peak of the current flat head in terms of quality and listening. It is one of your few choices. Third, if you have to work when you want to listen to songs, you can take care of your boss and colleagues while listening to songs with EM5. Isn't that what I am doing now? So, will your next pair of headphones be flat-headed?

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author:Boiling Valley Audio FEELGOOD08-24 10:11

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