Source: https://www.head-fi.org/showcase/ccz-solo-dc02.27657/reviews#review-36072
CCZ Solo DC02: At least the sound is right!!!
Pros: - perfect for bass lovers
- fun & deep bass
- balanced vocal with the right weight
- relaxed treble
- technical is quite good for the price
Cons: - poor cable & eartips
- less energy vocal for female vocal
- less pleasant treble for treble lovers

1. The accessories: typical of cheap chifi in the past, very minimalist, consisting only of braided cables whose quality is somewhat lacking & prone to tangling and eartips that are not good in terms of material or comfort.
2. The housing: the quality is also similar to old cheap chifi whose quality is just ordinary. consisting of a plastic housing and a metal faceplate with a DOP finishing.
3. Fitting:
not really good but still comfortable enough to wear.
4. The iem itself: it is still quite light, plugged using a cellphone is still quite enjoyable for me. But I still recommend at least using a dongle to maximize the sound.

Well, basically this IEM for me still feels v-shaped with a warm impression that focuses on the low to midrange area.
The bass itself has a fairly large quantity but not to the point of being over boomy, let alone dominant. The subbass feels deep with a rumble that feels quite okay. While the midbass has a fairly solid impact with a fairly good texture. The control also still feels quite good, while the speed is only medium.
For the mid, its position is behind the bass with a slightly warm presentation. The vocals are quite balanced between male and female vocals. The male vocals feel the right weight, while the female vocals feel quite smooth, a little thick & free from peaks or sibilance. But it feels a little less energetic & less loose for my taste.
For the treble, the presentation is rather smooth with sufficient extension & minimal peaks or harsh. Yes, this treble is suitable for those who are sensitive to treble & also good for long listening.
For the technical side, it's still pretty good for its price, the Stage is still quite spacious although not very wide. The separation can also be said to be okay. And the details can still be felt several times. Yes, the most lacking in resolution, transient and imaging feel a bit lacking.

-Those who need a warm iem with big bass but the presentation is still fun.
-Those who like IEMs with balanced vocals between male and female vocals, with body and a bit relaxed.
-Those who are sensitive to treble.
CCZ Solo appeared in an era that was quite fierce in its price range, if we look at the completeness or build quality, it can be said to be less competitive while for the sound. It might still be competitive but to enter the top ranks at a price of $ 20 I think it's a bit difficult considering its competitors who have quite mature sound.
But overall I still appreciate the sound, I can still accept it & listen to it with enjoyment , even though I'm disappointed with the completeness which feels less comfortable to use, especially the eartips.
