The sound quality is excellent, especially for the price. Very balanced and wide without heavy bass and treble. Very clearly. I have the original T10, they are darker but still very beautiful. I also have the B350 Pro which is great at almost zero price but is a bit heavier in the bass and treble due to the EQ so while it sounds decent it's a bit artificial but well worth it. These upgraded T10 earbuds definitely surpass the original in terms of sound quality. Not sure if this would really be considered an upgrade, more like a different flavor. I can't say if the quad mics are an improvement as I didn't have any issues with the dual mics on the originals. It's no problem that people hear me and always clearly. Since they have quads, I hope they keep getting better. I have another brand of quad speakers and they are terrible so not all are created equal. All test calls were understandable to others. The original T10 case had wireless charging. The original also had APTx (as did the B350 Pro, while they only run on the SBC. When I watch videos in game mode there is still a slight lag which is noticeable but not bad. Overall this is an improvement over the Original and worth it as the price is comparable.I would say that the main focus is on a balanced and clear sound.
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