ooopusX Op.22

Don’t be fool by the look but instead, it’s a clever design. The Rotating wheel turn the bass to extra 5db without compromising the treble is amazing. The trade off? Well, if only the connector is NOT “QDC” which might trigger a lot of audiophile like me! Understand they need to cut cost somewhere, so purchase at your own risk.

Safe packaging, product items were received as described 👍

As advertised

TL;DR op.22 > Truthear Zero RED
I'm not the most sensitive there is to how IEM sounds, plus also I only have the Truthear Zero Red as the only comparison to the op.22.
The graphs should show that the Red should be somewhat similar to the op22 and yet it's not. The op22 has a much forward mids, where singing voices sound way more energetic.
More 'present' highs where small hidden instruments that you hear in songs become little more louder and present but in no way "shouty" to me.
The mid bass of the op22 is so much stronger than the Red where it sounds "striking" and "punchy".
Lower bass is about the same strong rumblyness.
All this without turning it to the bass mode, yeah, I've yet to try that out till now.
For reference, I've compared these two IEMs with Expedition 33 songs;
Une vie t'aimer
Poeme d'Amour
Robe de Jour
And some popular anime songs just for fun.
*Again, take my "review" here with largest grain of salt possible as I'm just casual listener with the most vanilla of tastes.

Great value for 50SGD, great starting point for eq to taste and hence a great pairing with the Truthear KEYX