The professed aunt has been testing for nearly a year and participated in several public surveys. However, he has not been satisfied with his photographing and writing skills. Therefore, he is learning good articles from friends every day. He has not participated for several months due to work reasons. According to public opinion, we have had time to apply for the AM850 dynamic earphone from Aspen Tsui Tanaka Alloy. We are grateful for the trust of Zhongxiao Xiaobian and allow me to participate in this test. This time, many of the measurements and the appearance of the box and the appearance of the use of pictures, the part of the sense of hearing on the use of multi-language, nonsense, said not to begin to enter the topic.
1 Introduction:
Astrotec is one of the well-known brands in the field of HIFI acoustics in China. In 2002, it was founded by several key players who have more than a decade of experience in the audio equipment industry. Some of these people have come from top domestic acoustic institutes, and some have been key technical players in international acoustics companies. "Astrotec" is made up of Astro (Starry Sky) and Tec (Technology), meaning Astrotec's endless pursuit of technology exploration. The front is the introduction of Dusitang's brand to Astrid. The products of Astrid are mainly divided into four series. They are AM (dynamic series of wood and metal combined), LYRA (flat head plug series), and AX (multi-unit ring). Iron binding series), AS (Headwear series). In the market generally AM and AX series of products have been recognized by many Shaoyou, AM800, AX35 has always been Astrid hot products. Today's publicly-measured AM850 is supposed to be an AM800 upgrade.
2. Unpacking:
Aunt Zhang's SF Express, which took nearly 4 days before the Spring Festival was received, was not packed in cartons, so there was no “value-to-box†sealing paper. It was protected with bubble cotton. The packaging was intact and undamaged. Public measurement notice.
Headphone packaging in gray-based colors, the lower right corner of the Hi-Res's small gold sign is particularly prominent, but also the selling point of this headset, as for the meaning of Hi-Res, please value your friends on their own mother.
The side is an anti-counterfeiting label. The following are the parameters of the headphones marked in Chinese, English, and Japanese (why is it in Japanese?), 16-ohm impedance, 110-sensitivity. From the parameters, the AM850 should be a relatively easy-to-drive headset. .
The back of the package is the main features of the headset, including the new dynamic unit, DuPont multilayer diaphragm, Ke Tan sound chamber, silver-plated wire and so on.
On the other side are product labels and barcodes, as well as some production information, as well as Astrid's WeChat QR code.
Open the plastic film, gray shaded paper box feels good, A Si Tsui's English LOGO and AM850 headphone concave silver pattern looks B is very high.
The middle of the box was opened. There was a pull string at the top of the box. I thought it was a drawer type. It took a long time to pull it out. It wasn't the way it was opened. This rope was just a lanyard for business display.
Under the warranty card, there is a layer of lids. The black lids are written with silver gilt letters and A Sui's promotional language and English LOGO.
Headphone and earphone storage tray
Below the headset are all the accessories, headphone packs, aircraft heads and sets of headsets and hangers.
Stainless steel earmuffs storage tray, surface scrub technology, it is very grade. For the first time, I saw this thing. The earphones didn't seem to have this thing. I don't know what headphones are equipped with this one. It can be seen that Astrid still has enough material for the AM850.
Leather headset bag, brown leather a little soil, leather is a little bit harder, but the stitches are very regular, the surface is very smooth, clear print without burrs, the hand is quite good.
The aircraft head is basically useless, and the mobile flight mode can be solved.
To Zhang family portrait, three pairs of silicone sets of three pairs of brother sets, a pair of sponge sets, a pair of ear hooks, an aircraft head, an earmuffs storage tray, a leather storage bag, accessories are still very rich.
3. Appearance:
Brushed stainless steel cavity, polished smoother. Smaller size, it will not be heavy to wear. 
The tail is Ke Tanmu and Ke Tan. It is an abbreviation for Ivory Coast Lobular Rosewood and Côte d'Ivoire. Unlike Indian leaflet, it is less expensive. Official propaganda can reduce resonance, increase the thickness of vocal, and expand the sound field. Experience again.
Breathing holes are designed under the ear plugs, red decoration at the connection, and the aesthetic effect is improved.
Headphone cable uses Kevlar material to increase tensile strength, Teflon material is used for the line skin, which can resist high temperature, prevent aging and harden, and use silver-plated oxygen-free copper wire in the heart. At this price, the headset is plated with silver and oxygen-free. Copper wire is still relatively small, AM850 configuration is still very conscience.
The one-piece metal conduit has a good durability. It turned out that my UE900's plastic catheter was cut off accidentally when replacing the earmuffs, and metal would not have happened like this. It may not be possible to sit in the ass.
The filter is very dense, which can effectively prevent foreign matter and dust from entering the earphone cavity.
Metal connector, printed on the headset model "AM850". The auscultation effect can be reduced by adjusting the metal splitter, but the effect is not obvious in the actual wearing process, but the workmanship and feel are still good.
"L" shaped 3.5 gold-plated headphone plug.
Astrid's overall workmanship is still good, but I have got a small gap in the wooden cavity of the AM850. I don't know whether it is a jealousy. Other values ​​are not mentioned in the test article, I think it should be Making defects, Astrid's quality control or to strengthen.
4. Feeling of hearing:
I used the mobile phone, IPAD and Feiao X5 generation respectively to experience the driving force and sound characteristics of the AM850, and then talked about the triple frequency characteristics of the AM850 through different types of music.
Directly pushed by mobile phones, AM85016 Europe's impedance is relatively easy to drive, the overall can be pushed to 80%, listening to songs with APP is limited by the format of network audio sources, large-scale sound field and positioning basically can not hear, but popular, vocal are Can have a certain degree of resolution, plus the warm tuning of the AM850 is still very resistant to hearing.
The X5, which has been used for almost three years, is now considering changing players, DX200, Sony Black Brick, or receiving a second-hand AK240 fancier. Or returning to the AM850 at the flying proud proud X5 generation pushes directly, uses the handset to listen to the concert to be somewhat mediocre, the mediocre sound field is a pain point which the handset pushes directly, when the audition musical instrument complicated track the knot is like the hair flutters, cannot demonstrate the detail clearly, but uses X5 push can play the micro-moving circle technology that AM850 propagandizes. The large-scale production can perform well in terms of sound field size and sound localization. It seems that the AM850's micro-motion ring and composite diaphragm technology are worthy of recognition.
Because I don't have an Apple mobile phone, the characteristics of the Apple device's direct and equal balance are still very different from those of an Android phone, so use the IPAD to experience it. Listening under the IPAD, the midrange part is more prominent than the Android phone, and the sound is brighter, which is more suitable for listening to pop music. Excessive vocalization does not affect the background sound. The two types of sound are more clearly discernible and the resolution is satisfactory. It does not make people feel bored.
With the experience of the above types of players, this headset can be said to be very easy to drive and very adaptable. There should be enough time for the Chinese New Year to pick up the headset. After 100+ hours of downtime, the AM850's change is not small. I will share a few more representative songs.
Auditions: Song Dongye, Anheqiao, Chen Jieyi, Heart Movement, Susannah Hanko, Allegro moderato
Through the song "An He Qiao," I listened to the AM850's low frequency. The sense of low-frequency power is sufficient, but the sense of volume is not excessive, and the dive is relatively deep. The restoration of the drum sound is also very good, but the elasticity is not enough, it seems a bit blunt and seems to be powerful. Fist hit the stone slab, the overall low-frequency performance still reached a very high level of the same level.
Through the "heartbeat" test AM850 vocals and high-frequency, you can feel the AM850 sound is relatively bright, warm sound, vocal part and background sound contrast is more obvious, the middle frequency resolution is relatively high, will not make people kind of paste Feeling together. The high-frequency part of the AM850 is overall weak, but it has good transparency and detail performance and is very suitable for listening to pop music.
Susanna Hanko "Allegro moderato" is a rhythmical ups and downs of pure music used to test the sound field and resolution of the AM850. AM850 excellent low-frequency sense can bring a good sense of envelopment, sound field and positioning can not be compared with the big ears, but in the same level of earplugs also reached a certain level, the sound of the violin is not only transparent and not harsh, the entire track Sounds lively and energetic, sound details can be truly restored, and resolving power is also very good. In the case of multiple plays, each instrument can be clearly identified.
5. Summary
AM850 can be said to be a very distinctive earphone product in terms of appearance and sound. The shell of sandalwood alloy is definitely the biggest selling point of this headset. It has a very good design, and the rich accessories also show Asterui's quite Sincerity. In terms of sound, this headset is also characterized by distinctive features. The warm tuning is very resistant to noise. Its performance on low frequency music is very good. The single dynamic circle unit can have a good analysis and it is also worthy of recognition, but it's not enough. The place is high frequency and sound field, but it is not obvious short board for moving coil earplugs, but only personal preference. Overall, this headset is still very suitable for the pursuit of personalized friends choose. The sense of hearing is a metaphysics. All these are my personal feelings. Fanyou with different feelings can also put forward their own opinions in the comments. In the end, I wish you all the best of luck in the Year of the Rooster. The value-friends who reward you with gold coins are even more prosperous and prosperous.
Percutaneous Endoscopic Lumbar Discectomy,Percutaneous Endoscopic Interlaminar Discectomy,Medical Camera With Light Source,Peld Peid System Tower
Dragon Crown Medical Co., Ltd. , https://www.dragoncrownmed.com