The iron triangle is a well-known audio brand in Japan. The earphone product line is very rich. The ATH-IMxx is a series of in-ear headphones. It consists of IM letters plus numbers. It seems that this is a series arranged for "multi-unit". For example, IM02, 03 are two-unit and three-unit moving iron headphones, and the ATH-IM70 to be evaluated today is a special two-unit moving coil earplug.
As shown in the figure, the ATH-ATH70 has a relatively large size and a very bright red special plastic casing. The traditional in-ear design, the proportion of the length from the main body of the earphone mounting unit to the entire catheter of the in-ear catheter It is still larger in the in-ear headphones. The internal space of the headphones is relatively large. There is no problem in placing a 10mm diameter moving coil unit. However, the official internal structure chart is not given, and the official website can not find relevant information. Content. On the market promotion page [Taobao shop] has a similar description.
According to the official instructions, the IM70 uses two [tuned dual-symphonic drivers], as shown in the figure, there is a smaller diameter unit on the back side of the main unit. It is difficult to analyze due to lack of data. The design purpose of this structure. Let us speculate that the smaller diameter unit is arranged on the back side of the main unit [the main unit is closer to the human ear], obviously does not bring much help to the high frequency? The unit may be helpful in low-frequency detail in terms of material and structure, although its size is smaller.
In the official introduction, the iron triangle emphasizes the appearance of the IM70. The red part is a special hard resin as shown in the figure, while the black part of the iron triangle LOGO is printed on the back, and aluminum metal is used exclusively.
The IM70 official indicator has an impedance of 10 ohms and a sensitivity of 108 dB. It is a very good driver. The headset also provides a design that can be changed. The larger shape of the earphone needs to be worn with the ear strap. The earphone has a wire around the ear. Hard metal helps the headset line to be shaped, but this part of the wire seems to be too thick to wear a little inconvenient. Overall, the headset is comfortable to wear, the stability of wearing is more general, but after all, such a big head will not look like Very small earplugs are so comfortable.
Headphones have been sent by users for a long time, this headset should be no less than 500 hours in our time. Test using iPhone 6 Plus, vivo X5Max as the main reference for mobile phones, using FIIO X1, X3K, Cayin N6, etc. The player reference.Monitor 06 MX, Lotoo PawGold, etc. as auxiliary reference. Also refer to the mobile phone resources as much as possible at hand. The contrast headphones selected Vsonic VSD3s and GR07 MKII.
Overall, the Iron Triangle IM70 is a relatively young and unassuming sound style. Although it has a dual-unit design, it does not have a particularly excessive low-frequency rendering. The overall sound style pays more attention to the performance of the intermediate frequency and vocals in various sound sources. The overall sound is somewhat neutral, the intermediate frequency will have a big difference in the dynamics of different styles. The intermediate frequency will sometimes be a bit abrupt, sometimes it will be squeezed. Compared with Vsonic's VSD3 series and GR07 series, the overall sound of IM70 is more obvious. Cautious or compact.
High-frequency performance : The high frequency of IM70 is still not at the top level in dynamic headphones, but compared with its slightly unammable intermediate frequency, the high frequency of IM70 is not as open as VSD3s or even GR07 MKII series, but it should be restrained. Some. When paired with iPhone or X1 level sound source, IM70's sound is obviously not VSD3s slack, the high frequency resolution is also slightly worse, the extreme high frequency extension gap will be slightly obvious. But the advantage is to listen to some popular When playing music, the transient control of the IM70 will be better, and the burr feeling will be much less. When the sound source with better driving force is used, the high frequency tension of the IM70 will be improved, especially the middle and high frequency parts will be more solid. However, the overall details are generally average, mainly because the sound field and transients are not slack, and even more restrained than GR07 MKII.
IF performance : IM70's IF performance in X1, X3K and iPhone 6 and even vivo X5Max line is full, vocal performance is better than GR07 MKII is better than VSD3s, compared with GR07 MKII balanced style, IM70 IF Slightly squeezing the squeezing traces, the vocal image is relatively front-facing. This situation is particularly prominent on the 06 MX or PawGold-level sound source. The greater the driver's driving force, the IM70's IF dynamics and thickness will be significantly more. Strong. This is not a shortcoming, but the sense of hearing will be different when playing with different music. From a dynamic point of view, the IM70 does not seem to push well, obviously it has explosive power in a better sound source. On the device, the slack of the VSD3s, the style of the two heads is obviously tilted, and the IF performance is more natural and calm. However, the IF voice is not solid enough and stable. On the entry source, the IM70 is obviously too rigid, just the thickness of the sound and The connection between the high and high frequencies is better. The better sound source brings better dynamics, which makes the IM70's intermediate frequency more stereo, the intermediate frequency is more full and more explosive. But in the details, the IM70 sound is still cautious. The resolution is still not good enough.
Low-frequency performance : The low frequency of IM70 is described in the official introduction with the word "tight". This is a comparative description of its style. It is not as slack as the VSD series and has a low frequency of volume, which also leads to its overall sense of hearing. One of the reasons for not being full and slack. If you are using an ordinary mobile phone or a player below the X3K level, the low frequency of the IM70 is very general. Although the introverted style guarantees a certain resolution and transient, the sound is too high. Wood. But after we replaced Cayin N6, Monitor 06 MX, PawGold, we found that the mid-low frequency and low-frequency dynamics of IM70 still have great potential. At this time, the elasticity and thickness of the low frequency are excited, and the overall performance is obviously better than the previous one. The group of players or mobile phones. This low frequency and VSD series are two types of styles, IM70 still maintains overall convergence, relatively tight state, but also has good dynamics and details. Compared with the neutral style of GR07 MKII, IM70 More like a VSD series with a tighter sound.
to sum up
In general, the iron triangle ATH-IM70 shows the sound quality of a mid-range dynamic ring earphone. Compared with the high-end dynamic ring earphone, it obviously lacks the delicate and slack sense of sound in which the moving coil is better. The force is also at a weaker level. The earphones are partial neutral in the overall style, but they are more prominent in the medium frequency style. The headphones are easy to drive, but to play its better dynamics, you need to match the more advanced sound sources. Under the mobile phone and player, the IM70 shows more full intermediate frequency and slightly restrained high frequency, which lacks the slack of medium and high frequency, while the low frequency is somewhat woody. Under the better player sound source, the IM70's intermediate frequency and The low-frequency tension will not be small, but the details are still general, the overall style is still tight. The details of the IM70 is not as good as the VSD series, the latter has a significantly more relaxed sense of hearing, the medium frequency dynamic on the IM70 slightly dominated In terms of feeling, it is difficult to judge the role of "dual unit", but the overall performance is basically satisfactory. However, due to the huge progress in the performance of domestic in-ear headphones in recent years, IM70 is obviously not competitive at the same price, of course, also lament Vsonic will
Audio-technica Iron Triangle ATH-IM70 In-Ear Headphones [Double Moving Ring]
High-frequency performance : The high frequency of IM70 is still not at the top level in dynamic headphones, but compared with its slightly unammable intermediate frequency, the high frequency of IM70 is not as open as VSD3s or even GR07 MKII series, but it should be restrained. Some. When paired with iPhone or X1 level sound source, IM70's sound is obviously not VSD3s slack, the high frequency resolution is also slightly worse, the extreme high frequency extension gap will be slightly obvious. But the advantage is to listen to some popular When playing music, the transient control of the IM70 will be better, and the burr feeling will be much less. When the sound source with better driving force is used, the high frequency tension of the IM70 will be improved, especially the middle and high frequency parts will be more solid. However, the overall details are generally average, mainly because the sound field and transients are not slack, and even more restrained than GR07 MKII.
IF performance : IM70's IF performance in X1, X3K and iPhone 6 and even vivo X5Max line is full, vocal performance is better than GR07 MKII is better than VSD3s, compared with GR07 MKII balanced style, IM70 IF Slightly squeezing the squeezing traces, the vocal image is relatively front-facing. This situation is particularly prominent on the 06 MX or PawGold-level sound source. The greater the driver's driving force, the IM70's IF dynamics and thickness will be significantly more. Strong. This is not a shortcoming, but the sense of hearing will be different when playing with different music. From a dynamic point of view, the IM70 does not seem to push well, obviously it has explosive power in a better sound source. On the device, the slack of the VSD3s, the style of the two heads is obviously tilted, and the IF performance is more natural and calm. However, the IF voice is not solid enough and stable. On the entry source, the IM70 is obviously too rigid, just the thickness of the sound and The connection between the high and high frequencies is better. The better sound source brings better dynamics, which makes the IM70's intermediate frequency more stereo, the intermediate frequency is more full and more explosive. But in the details, the IM70 sound is still cautious. The resolution is still not good enough.
Low-frequency performance : The low frequency of IM70 is described in the official introduction with the word "tight". This is a comparative description of its style. It is not as slack as the VSD series and has a low frequency of volume, which also leads to its overall sense of hearing. One of the reasons for not being full and slack. If you are using an ordinary mobile phone or a player below the X3K level, the low frequency of the IM70 is very general. Although the introverted style guarantees a certain resolution and transient, the sound is too high. Wood. But after we replaced Cayin N6, Monitor 06 MX, PawGold, we found that the mid-low frequency and low-frequency dynamics of IM70 still have great potential. At this time, the elasticity and thickness of the low frequency are excited, and the overall performance is obviously better than the previous one. The group of players or mobile phones. This low frequency and VSD series are two types of styles, IM70 still maintains overall convergence, relatively tight state, but also has good dynamics and details. Compared with the neutral style of GR07 MKII, IM70 More like a VSD series with a tighter sound.
to sum up
In general, the iron triangle ATH-IM70 shows the sound quality of a mid-range dynamic ring earphone. Compared with the high-end dynamic ring earphone, it obviously lacks the delicate and slack sense of sound in which the moving coil is better. The force is also at a weaker level. The earphones are partial neutral in the overall style, but they are more prominent in the medium frequency style. The headphones are easy to drive, but to play its better dynamics, you need to match the more advanced sound sources. Under the mobile phone and player, the IM70 shows more full intermediate frequency and slightly restrained high frequency, which lacks the slack of medium and high frequency, while the low frequency is somewhat woody. Under the better player sound source, the IM70's intermediate frequency and The low-frequency tension will not be small, but the details are still general, the overall style is still tight. The details of the IM70 is not as good as the VSD series, the latter has a significantly more relaxed sense of hearing, the medium frequency dynamic on the IM70 slightly dominated In terms of feeling, it is difficult to judge the role of "dual unit", but the overall performance is basically satisfactory. However, due to the huge progress in the performance of domestic in-ear headphones in recent years, IM70 is obviously not competitive at the same price, of course, also lament Vsonic will
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