DENON PerL Pro True Wireless Earbuds【AHC15PLBKEM】TWS

First, this product is equipped with personalization features that utilize medical technology. When combined with a dedicated app, it automatically measures the different hearing abilities of each person and adjusts the sound quality to the optimal level.

The unadjusted sound is sufficient, and I wouldn’t be surprised if some people prefer the unadjusted sound. Depending on the song, the sibilance of the vocals may be a concern, but I think it’s within an acceptable range. The bass is well-defined and pleasant.