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Meizu EP-21HD sound quality evaluation
Igao7 Feng Weiwen 2015-12-22 16:59

At the Meizu MX4 Pro launch conference, EP-21HD, as an official match, also appeared simultaneously. As an upgrade of the EP-21, the EP-21HD continues the previous generation of pure white design, with an impedance of 128 Ω and a new diaphragm. As a 129 yuan mobile phone, EP-21HD is coming.


In terms of appearance design, EP-21HD is actually an EP-21 color change version, which only changes the cavity surface from gray to white. There are eight sound outlets in the cavity, which should be paid attention to when wearing and using to avoid the sound change caused by blockage. In addition, the EP-21HD still does not have a sponge sleeve attached, and there is no targeted design for wearing. The EP-21HD is unstable and tiring for a long time.


Objective test:


In terms of objective test, we used CRY6151 electroacoustic device tester. For in ear and flat head plugs, we used IEC318 and IEC711 ear simulators respectively to obtain more accurate data. CRY6151 electroacoustic device tester is the third generation electroacoustic testing system launched by Jigao Electroacoustic, which can test the frequency response curve, sensitivity, impedance, signal to noise ratio, resonant frequency and other related parameters. According to the type of earphone and its actual use, we will test the frequency response curve and impedance or corresponding test items respectively, and senior earphone engineers will give explanations and possible comments. It should be noted that the test results may differ from the data published by the manufacturer due to the differences in instruments, test methods and individuals. (To put it more generally, this can be regarded as the score of sound quality.)


Meizu EP-21HD frequency response curve


Engineer Penny's opinion:

Meizu EP-21HD's frequency response curve is relatively smooth. From the frequency response curve, the middle and low frequencies are slightly larger, but the transition is more natural. In addition to the flat plug, the auditory performance is relatively balanced. The high frequency does not fluctuate too much, and the overall frequency response curve performs well, but because the impedance is relatively high and the sensitivity is relatively low, it is not particularly easy to drive, and it requires relatively high voltage to get good results. In addition, the frequency response curve From 2 khz to 4 khz, there is a slight smooth bulge, and the vocal performance will be good.


Subjective sense of hearing:


In terms of subjective experience, we will experience the earphones carefully after the corresponding warm-up process, and invite different types of editors and experimenters to have different matching experiences. Due to the differences in front end, wearing, sound source, taste, brand belief and listening concept, there may be differences between different experiencers. In addition, the experience of experiencers only represents their personal feelings, and does not represent objectivity, absoluteness and impartiality.


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Although the appearance of the EP-21HD is almost the same as that of its predecessor EP-21, the sound of the EP-21HD is not at the same level. The sound quality of the EP-21HD is much higher.

When matching with MX4 Pro, this "suit" is matched in sound direction. It can be felt that Meizu has really spent some effort on this combination. Although the EP-21HD has an impedance of up to 128 Ω, the MX4 Pro itself is not a fuel saving lamp, and the EP-21HD is basically "fed" under its powerful thrust. What we get is a kind of sound with high resolution, clear sound style and texture at low frequencies.

Compared with ordinary mobile phones and their plugs, the MX4 Pro+EP-21HD can be described as a qualitative leap in quality and listening sense. The sound details, high-frequency extension, sound field size, etc. displayed by the EP-21HD driven by the MX4 Pro are not comparable to ordinary mobile phone combinations. For a 129 yuan headset, it is worth getting such a sense of hearing performance. As for the shortcomings of the EP-21HD, many users may think that its voice is too thin, the voice control is not good enough, and the low frequency is also slightly lacking. It is not a good choice to listen to male voices.

In addition, Meizu didn't even include a sponge sleeve in the EP-21HD package, which is a shame for a flat plug. With the addition of Shanghai sponge sleeves, the EP-21HD can get a better sense of sound surrounding and low-frequency volume, and the high-frequency burr will also be improved. Compared with other earphones of the same type, I have only one HiFiMAN ES100 of the same type as the high resistance flat head plug. This earplug has a more frightening 150 Ω impedance. Driven by the MX4 Pro, the quality of the EP-21HD is still much lower than that of the ES100, especially the quality gap between middle and low frequencies. Of course, the price difference between the two is also obvious. When using the EP-21HD with other mobile phones, it seems that the sound is not right. Some of them have insufficient thrust and some have loose low-frequency. It seems that the EP-21HD is tailored for the MX4 Pro.


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Low frequency: EP-21HD The low-frequency is appropriate. Because it is not an in ear design, low-frequency diving is not easy to be felt, and the EP-21HD is not a common earphone that takes the route of verbs and big words. The low-frequency sense of quantity is less, the texture is good, the rebound speed is fast, but the diving is not deep. When listening to music, the low-frequency is easily covered by the middle and high frequencies or external sounds.

intermediate frequency: The intermediate frequency of EP-21HD is a highlight, The overall mid-range of EP-21HD is relatively bright, which also makes the voice very close to the ear. When listening to songs of singers with bright timbre such as Celine Dion or Whitney Houston, it is particularly obvious that the voice is very bright and powerful, but it is well controlled. This is why EP-21 is far inferior to EP-21HD. As for Faye Wong, who is a slim and soft voice, The performance of EP-21HD is also good, but the sense of distance is far away. On the whole, this mid-range is very good, flexible and bright. It has a very excellent performance for female voices. As for male voices, Westlife's voice performance is better than MJ's voice. On the whole, more than 70% of the voices will be pleasant to hear.

High frequency: Due to the strength of the IF, the high frequency of the EP-21HD has to play a supporting role. The overall extension of the high frequency is good, but it is dark, so those who expect the crisp high frequency may be disappointed. The high frequency of the EP21HD can only be regarded as a decoration for the whole.

Analytical force and separation degree: After all, there is only a plug of about 100 yuan, so the analytical power of EP-21HD cannot be comparable to that of high-end plugs. That is to say, the overall sound of EP-21HD will not have any graininess, and the singer's breath sound is basically not expected, The analytical power of EP-21HD is probably that it can well separate the accompaniment from the voice, and at the same time prevent various instruments of background music from mixing with the voice. But that's all. The vibrating sound of the guitar string in the California Hotel is obviously beyond its ability.

Sound field: Thanks to the open design, The sound field of EP-21HD is very broad, without any feeling of "stuffiness". However, the distance between musical instruments and vocals is relatively close to the ears, and the sound field has no sense of three-dimensional. Like a ring screen movie, the performance in depth is general. However, for earplugs at this price, it cannot be required by the flagship standard. Based on this, the sound field performance of EP-21HD is qualified, at least there is no sense of chaos.

Front end collocation and ease of deduction: It is estimated that there are few people who buy the EP-21HD earphones alone. Most of them are used as the plugs of the MX4 Pro. Meizu is also very interested in this official pair of earphones. The sound is very pleasant and endurable. Although the quality of the EP-21HD is the qualified 100 yuan plug level, it does perform very well under this combination. If you want to use the EP-21HD on other mobile phones, an impedance of more than 100 ohms means that there is a certain requirement for thrust. You need to turn the volume up to about 15% more than the ordinary EP-21 to obtain similar loudness.

Potential: If the EP-21HD is matched with power amplifiers, its quality will be improved to a certain extent, but the overall improvement is limited, and the sound separation will be slightly better. However, if the power amplifiers are not matched properly, the already bright IF may be brighter, and the excessively bright IF may not be good for the sense of hearing. So, The EP-21HD can be put on top, but it is picky about the power amplifier. The result may not be as good as replacing a better headset or using the MX4 Pro directly.

Summary: The quality of EP-21HD is undoubtedly very good for the plug of a mobile phone. Meizu still has the style of an old music player manufacturer for its sound matching with its own mobile phone, The combination of MX4 Pro and EP-21HD has a very good interpretation of most popular music dominated by vocals, and it is commendable that EP21HD does not fall into this price level. Many other plugs pursue the stereotype of low-frequency sense. The low-frequency point may not be so ear grabbing at first, but if you listen carefully, the tuning of EP-21HD has a special flavor.

As for the purchase worth it? If you have an MX4 Pro and need a cheap, easy to use, good sounding and practical headset, then the EP-21HD is your best choice. If it is other phones with ordinary thrust, then it is necessary to consider whether your phone has the ability to launch the EP-21HD with enough volume.


Summary:


Although at the launch of Meizu MX4 Pro, the EP-21HD is more like the positioning of supporting roles against its Hi Fi sound quality. But in the actual audition, Meizu MX4 Pro and EP-21HD can be said to be the best match. Whether it is the high impedance of EP-21HD or the tuning of the two, there is a sense of mutual dependence.

Of course, this kind of mutual dependence seems to be done too hard, which makes the high impedance of EP-21HD in other mobile phones either not enough, or the sound of matching is poor. Meizu MX4 Pro also has similar problems. Of course, as an official match, Meizu's approach is also reasonable and convincing.

As a Pace designed for mobile phones, EP-21HD has also designed an integrated remote control that can adjust the volume, play and answer. In addition to its sound quality performance, the price of 129 yuan alone is quite good, not to mention the package price of 99 yuan. Of course, the EP-21HD is rather ordinary in wearing. There is no sponge cover attached, so the wearing comfort is reduced.

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