The Q3 by DOBOLY most likely has the same drivers that DOBOLY Q2C has, only in different housings. The difference in frequency response is probably affected by the shape of the housings and the much higher diameter of the nozzles. In theory, Q3 has slightly less detail in the highs than Q2C, not it's not noticeable. Yet again, these earphones are as great as the Q2C, and you can safely get the design you prefer.
NOTE: This model was most likely discontinued. It is very difficult to find for purchase.
Exceptional bass quality. The sub-bass adds excitment to the sound.
An overall satisfying sound quality.
Very high volume levels without any amplification required.
A dedicated volume slider on the inline remote.
The remote has support for both legacy and modern mobile phones.
The mids and highs aren't the clearest and brightest that I've heard. They are somewhat darkened, but not too much.
The splitter and the remote are the same thing here, which means the mic is too far from your mouth.
The inline remote has an CTIA/OMTP pinout order switch. The CTIA mode (switch up) works for most recent devices, while the OMTP mode (switch down) works for legacy devices, like Nokia and Sony-Ericsson, and even OnePlus One.
Comfort & Fit
The pre-applied generic black tips are fine, they suit these earphones well and hold in place even in long listening sessions, but may occasionally slide out slightly.
Lows / Bass
Powerful bass response with plenty of sub-bass that will tickle your ear canals. Amazing earphones for bass-heavy music.
Mids / Vocals
The mids and vocals are very lively and exciting, but sound darkened. Still, I'd rate them much higher than the average earphones.
Highs / Treble
The highs are loud and clear, but also pretty darkened. For a lot of music styles, this kind of sound is actually quite suitable.