Overall, the sound quality is extremely flat. While based on a neutral, unexaggerated, and precise expression, the bass range is so solid that it is hard to believe it is an open type, and the smoothly extending treble range is impressive, giving the impression of high potential. The high sensitivity makes it relatively easy to drive, and you don't need an over-the-top amplifier to enjoy these headphones. They are light and comfortable to wear, and I like the stoic style that eliminates unnecessary decoration.