Fantastic sound for the price
Absolutely amazing sounding pair of in-ears for the price. Been using it daily with a One Plus One and occasionally on my desktop with a O2 headamp. But it definitely doesn't need any amplifier or anything to sound great!
The construction is solid, whatever they use to make these cables doesn't tangle easily, and on the rare occasions that they do, its always simple fix.
Sound wise, you get very clear mids and highs which makes them perfect for vocal, pop and jazz music which I really love. The bass is decent, but don't expect any heavy pumping bass action from this one.
Overall, when I was shopping around, I really wanted a daily all rounder in-ear that can suit my general needs. I most definitely found it in the Co-Donguri.