The Astrotec AM-90 earphone is leading the International Moving Iron technology.
The frequency response of this earphone is stable, it can't be affect by the
temperature and humidity change.
Low impedance ,easy to drive , suitable for a lot of music player.
Bring you more pure music space with good soundproofed effect.
The leak proof sound design is help for your hearing
1 Astrotec AM-90 Earphones (Silver)
2 sets of black Silicon tips
1 pair of blue Foam tips
Black carry case (It may be replaced by a portable bag in the another run)
Most Helpful Customer Reviews
Pros: Great sound, very similar to the A151P, maybe marginally better but really no significant difference. Not at all surprising since the AM-90 and A151 use the same balanced armature. The aluminum body might look heavy and bulky in the picture, but it's actually quite light and does not stick out of my ear very much. I am able to wear these in bed when lying on my side on a pillow. The microphone and remote work with my Android phone. Despite what some other reviewers have reported, I did not appreciate significant sibilance with these.
Cons: Although they haven't broken on me in my 3 months of use yet, the strain relief, cable, and 3.5 mm audio jack feel flimsy, especially compared to the A151. The audio jack is straight and sticks out awkwardly from my phone when it is in my pocket. The silicon ear tips offer mediocre isolation and have a tendency to remain inside my ear canal when I try to take the headphones out. Since the ear tips are constantly separating...
I bought this based upon reviews I found online and the amazon reviews as well.
Sound is excellent! Not too bass heavy like the Beats, but nice and clear with a bit of thump. I can hear notes, lyrics and other sounds very clearly. It also does a really good job blocking outside noise. (I use the white earpiece that comes with it).
Design: I really like the aluminum housing, it looks very sleek. The cable is clear so it shows off the wiring inside, and is made of a strong but flexible material. I haven't had any problems with these cables getting tangled up.
Build quality: I've had these for a couple of weeks now and have been using it during my daily 2 hr commute and have found these earphones to feel really durable.
Cons: As someone else mentioned, it does get noisy if you wear these earphone's straight down. If you wrap it behind your ear (like sport earbuds) it mostly fixes the problem. It will work for running, but...
Sub $50 IEMs are a growing market, and we've been blessed with a lot of good options -- DUNU Trident, Brainwavs M1, Meelec M6... the list goes on. Of course, for $50, none of these IEMs can offer everything.
But the Astrotec Am-90 comes close.
Build Quality: 5/5
The build on these headphones is really nothing to scoff at. Aluminum casing and a heavily shielded wire combine to make a nigh-indestructible piece of headgear. As someone who spends *at least* three hours a day with headphones in -- usually in a gym or cross country course for a large part of that time -- I can safely say that these have been put through their paces. And survived.
Sound Quality: 4/5
The SQ on the AM-90 is smooth with strong mids and low end. Where it struggles, and what I have to take off for, is treble. Especially for busier orchestral music, the AM-90 fails to reproduce a crisp sound on the high end.
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