The dirt-cheap YOLOPE K5 proved to be built better than much higher-priced earphones. The sound quality, however, is mediocre, yet still much better than a large portion of higher-priced earphones in my collection. They are mainly warm, bassy without many recessions in the frequency range, at least up to the upper-highs, yet the clarity and timbre aren't precise enough to compete with higher-ranked earphones.
If you're on a very low budget, you should give these a shot. Otherwise, you should look for something with better clarity.
Overall very decent sound quality for the price.
Excellent bass extension and stability.
Very loud without many uncomfortable peaks.
Surprisingly good build quality, with a thick (but flexible) cable and a durable-looking plug.
Excellent wide-bore ear tips, better than most narrow-bore ear tips I've used.
The mids and highs are mediocre, but acceptable for the price.
The bass could use some sub-bass in place of some mid-bass.
Plastic (matte), triple-button*, no strain reliefs
PVC-coated (smooth), 114cm, soft, straight
Metal, straight, short, soft strain relief
The volume buttons work on Android devices. I don't have an iPhone for compatibility check.
Comfort & Fit
These earphones' housings are light but are quite bulky and long, and offer absolutely nothing in terms of ergonomics. However, the included wide-bore tips are excellent in keeping a tight seal, and I had absolutely no comfort issues with these earphones.
Lows / Bass
The bass is punchy and very warm. The mid-bass is a bit muddy but not to a great extent. Sub-bass is a bit lacking in comparison, but keeps an impressively stable bass clarity. Bass shaker test was almost clean of distortion.
Mids / Vocals
While not exactly the most recessed mids, they are still a bit disappointing when playing more complex tracks. Vocals and instruments sound somewhat artificial and have darkish timbre. Detail separation is almost non-existent, as vocals and instruments sound mashed together. The mids are still very listenable and quite adequate for such low price point, especially for not highly layered tracks.
Highs / Treble
The highs are quite disappointing, and that's forgivable for the price. They are discolored and a bit messy. Detail retrieval is unimpressive, they are loud but are darkish in timbre, hence harsh sounding. Like with many mediocre earphones, after some getting-used-to the highs are very listenable and I even forgot that I'm missing out a lot of the detail.