I ordered this IEM 2 days ago after just bought a Westone 4R which cost 20x more lol. Initial impression (out of the box) after hearing this IEM through my Samsung Galaxy 10.1:
- The sound signature is a bit dark (V shaped for sure)
- Treble is really sparkly, but at the same time harsh and metallic which makes it sounds a bit thin. At songs with a lot of cymbals from drum, it can sound too much is going on on the upper high freq. I do believe in burn-in, so I really hope the treble settle up.
- Mid sound more laid back, detailed, but still sound a bit thin. From what I read so far, burn-in does help bring the mid a bit forward.
- Bass sounds great. Its tight, deep and punchy which I like. Surprisingly, the bass doesn't interfere with the other freq which rare in $20 category IEM. I definitely like the bass on this IEM.
- This has to be the easiest IEM I have ever put in my ear. Straight out of the box, I didn't have any problem inserting this IEM to my ear. I am using this IEM with over the ear style.
- Overall, for $20 this IEM beats almost all my other sub $100 IEMs to date. It does share the same signature sound as my W4R with a more laid back mid and sparkling treble, very easy to transition from my W4R to FX40, which says a lot for this $20 IEM.
I will burn-in this IEM further and will update my review. So far, I am quite impressed with it and I highly recommend it for people who is looking for a great sounding IEM for a budget.
Hopefully the sound will change for the better after burn-in.