Functionality and technology
The FiiO EM5 is characterized by interesting design features that set it apart from other in-ear headphones. At its core, the EM5 has a 14.2 mm dynamic driver coated with beryllium. This coating ensures a lightweight yet very rigid diaphragm, which enables a detailed and extended reproduction in both bass and treble. These drivers are housed in a 3D-printed enclosure that incorporates a flute-inspired chamber to boost bass frequencies and deliver linear, compact sound reproduction without distortion.
The use of fourth generation DLP 3D printing technology to create the cabinet has also audibly really paid off. The EM5 offers the end user a controlled, slightly relaxed and mid-centered sound with a healthy dose of mid-bass (and bite).
One feature worth highlighting is the unique, interchangeable cable termination system, which allows users to connect their EM5 to sources that offer either a 3.5mm single-ended or a 2.5mm/4.4mm balanced connection. This is complemented by a high-purity Litz-braided silver cable that ensures good signal transmission. Another outstanding feature is the twist-lock connector system, which allows easy adaptation to different audio sources and even comes with a switch.
The technical specifications of the EM5 are impressive and include a frequency response of 10 Hz to 20 kHz and an impedance of 32 ohms at 1 kHz. And despite the interesting technical features and the high sound quality and level stability that the EM5 offers, it is not particularly power-hungry. With a sensitivity of 109 dB per 1 mW of power, these earphones require only a little more power than average headphones, but can be conveniently operated from most smartphones or laptops without the need for external amplifiers.
The construction of the EM5, which is only made possible by 3D printing, not only contributes to the sound quality (as already mentioned), but also to the unique aesthetics and wearing comfort. FiiO has incorporated an ergonomic design that is easy to use even for the visually impaired by labeling the left earbud with tactile dots for easy identification even in the dark. If you’re a night owl, you’re sure to love it.
Wearing comfort
The FiiO EM5 earbuds come with a selection of ear tips specifically designed to optimize the listening experience. These ear tips are an essential part of ensuring a good fit and therefore excellent sound quality and they play a crucial role in adapting the earbuds to the individual ear shape, which in turn affects comfort and sound isolation. With the FiiO EM5, certain wearing issues can vary and are generally dependent on the individual fit and anatomy of the ear.
My wife, for example, speaks of a very pleasant experience, as the earphones are lightweight and can almost be forgotten if fitted correctly. Especially during long listening sessions, this does not lead to fatigue, which is particularly appreciated with ambient music, as the EM5s offer a beautiful mid-range reproduction and a natural sound with an impressive stage. For me, it was a bit of poking around in the fog at first until I found a usable position. However, the effort was rewarded with a very good sound and the learning curve rises steeply. You just have to take your time at the beginning.
However, I was the only one in the family to feel a certain discomfort after wearing them for a long time, which is probably due to the size of the flat driver. The foam tips can alleviate some of this pressure, and it was always necessary to adjust the earphones to restore a comfortable position. This can be a bit of a pain in the neck, and can cause enthusiasm to wane somewhat. It’s important to emphasize that a proper fit is crucial, as an inadequate fit can lead to a loss of bass response and/or an unwanted emphasis on the higher frequencies. So you can hear the poor fit, not just feel it.
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