The relatively cheap quad-driver TRN V10 got many people exceited, including myself. Despite having an amazing build quality and level of comfort, these earphones have a few internal design and tuning flaws that keeps them from being among the top-rated earphones. The balanced armatures are too close to the eardrum, which makes the sound extremely piercing. You can't avoid using an equalizer to limit that intense 9kHz pierce.
Another flaw is not only noticeable while listening, but can also be seen with a quick measurement - there's a massive drop between 2kHz and 5kHz. This modifies the sound greatly, making it sound inaccurate. This can be corrected with an equalizer, but we're not reviewing equalizers here.
Amazing amount of detail and brightness that very few earphones can achieve.
Impactful, yet controlled bass response. Just make sure you have a good seal.
Very comfortable to wear for long listening sessions.
Excellent build quality, especially of the cable. The built-in ear loop is very convenient.
Extremely saturated treble, very piercing and fatiguing.
The sudden drop between 2kHz and 5kHz causes a noticeable distortion of timbre as it cuts off essential harmonics.
Many may not agree, but I find V10's design genious. The earphones are very comfortable and shaped to fit the ear perfectly. However, if you have small ears, your experience might be different.
Lows / Bass
Very impactful and stable bass response. Not exactly basshead material, but this bass is perfect for extended listening sessions - it's warm but not muddy, there's some sub-bass, but not exaggerated. A very universal kind of bass.
Mids / Vocals
The mids are a mixed bag. One one hand, they are very vivid and lively, but on the other hand, they seem to be lacking in detail. Experimenting with an equalizer led me to the conclusion that the upper-mids are just underemphasized. The sudden drop between 2kHz and 5kHz that you can see in the FR graph, causes a noticeable distortion of timbre as it cuts off essential harmonics, making the mids somewhat dry.
Highs / Treble
Severely saturated highs. Vocals are sibilant and high-pitch tones are literally painful. Don't try listening to dubstep with these, you might damage your hearing. If you are willing to mess with equalization constantly, be my guest, otherwise, I recommend looking for earphones that are safe to use.