The AM850 enter an extremely crowded market with an abundance of choices among sub-100$ priced IEMs. This is quite a challenge and for that Astrotec did well. The AM850 feature good build quality and an attractive design. The sound has an authoritative low-end with nicely tuned mids and highs. Ultimately, it is not enough to stand out as the single best choice, but nonetheless, they are a good addition to a pool of similarly priced IEMs.
