I’ll try to contribute to this forum as much as possible but some will perhaps find my review not very helpful because of my little experience with headphones and players:
My portable device is a Nokia phone N73 and since I have no comparison with dedicated mp3 players, I can’t tell you if it’s a bad or acceptable player.
When it comes to my headphone experience it’s also limited since my best reference is a KSC75 I owned a few months ago. The other IEM (or canalphone) I know are a Sparkplug that I find boomy and congested (it needs a lot of EQ to open a little mids and highs if one can speak about high with this IEM) and an EX51 that is not a reference but definitively better than the sparkplug. So no experience with high end IEM like ety, westone or shure.
Coming back to the X3:
First about the delivery from Jaben: it took only about 10 days to arrive in France after I placed my order. Good service. The 5$ declaration value is also a good point. Unfortunately, it’s not the new X3 design: mine has the red and blue plastic parts that make them not sexy at all. No matter, I ordered it for SQ. (I ordered the package with CK5 for my son)
Then I burned my X3 for about 20 hours playing my music thanks to head-fier recommendation. I only listened a few times during those first hours but initially I found the sound a bit too clear and perhaps on the harsh side. Then after, the sig changed to warmer and smoother sound, definitely not harsh or tiring. (I feel that the burning time is not only related to SQ improvement of the headphone but also to ear/brain “adaptation” to a new sound signature)
So compared to my KSC75 which is the best headphone experience for me:
Detail and accuracy: it’s definitely better with my X3. I hear a lot of subtle sounds I’ve never heard in my songs. Separation is also very good: you can easily follow each instrument and switch from one to the other without effort. Very good point.
Soundstage: here it’s the big step down compared to my KSC75
but it seems to be the price to pay for isolation. The good detail and separation of the X3 tend to compensate a little for soundstage loss.
Bass: Not very strong and deep but fast enough to make them alive and not overhelming the mids.
Mids: Great clarity and voice rendition
Highs: Seems to be less extended or less sparkling than my KSC75.
Fit: I have no isolation problems with the sony tips (med size) but I can feel a suction in my ears that it’s a little painful (it’s the indication of a good seal). Perhaps I should try the UE tips to see if it improves the comfort. They’re also very easy to insert and remove.
Build quality: nothing to complain about.
Conclusion:
Compared to my KSC75, I gained isolation, detail and clarity but lost the soundstage and a bit of the highs that make the music really shine. Then I’ll use the X3 as a complement of my KSC75 for noisy environment. If any manufacturer can find how to improve soundstage of IEM and at the same time keep the detail and clarity that would be like being in heaven…