How to determine the headphones sound good or bad?

Do you know if the sound of your headphone is good or bad? Please read below.

1.First, on the appearance of it. In order to wear comfortable as well.

2.Good high frequency required extension, burr, dental good control.Intermediate frequency full, thick. Intermediate frequency full, thick.Low-frequency descend, quantity does not affect the high frequency as well

3.Good cohesion, smooth sound.

4.Good sound field is open, administrative levels, accurate positioning.

5.The transient effect is good, dynamic.The overall balance, contract right.

6.Particles are prominent voices, the voice changes in temperature.

7.Sound texture true-to-life.

8.With after-sale guarantee and price is reasonable.