KZ-OMX(2) review:
Build Quality:
Above average, no issues here.
Fit:
They are about the same size as TG-38S and smaller than the EarBell, so no problem pointing them directly into the ear canal
Sound Quality:
Out of the box it sounds a bit muddy and thin, lacking extension on both ends.
Vocals sound too far away, no intimacy.
Everything sounds too airy.
There is an easy mod to improve SQ - block the back opening. I may permanently block it with Sugru.
This brings more body across the spectrum and removes some of the extra airiness, but bass and treble are still lacking extension - no way to improve them without EQ.
Conclusion:
Being a dual driver, I was hoping KZ-OMX would be as good as TG-JL1.
Unfortunately, KZ made a big mistake - they have placed the second driver directly in the back opening - a design choice Tingo didn't make with either TG-JL1 or TC100. It's a good earbud for ~10$ that it costs on Aliexpress, but there are much better options for not much more money.
http://www.aliexpress.com/store/product/The-original-tuning-unit-Earplugs-headphones-The-sound-quality-Female-poison-device/615477_1747567987.html
My current earbud ratings are
TG-38S = TG-JL1 > E100 > BE5 > PK1 > M760 > M1 >= ANV3SE > PK2 = ANV3 > M2C >= KZ-OMX2 > M3 > ES10 > AP8
Or in terms everyone can understand
16$ = 31$ > 20$ > 95$ > 160$ > 26$ > 15$ >= 100$ > 80$ = 70$ > 50$ >= 11$ > 13$ > 6$ > 12$