Parameters of this speaker: frequency response is 42HZ-30KHZ +/-3DB. The bass is very good, 42hz, with high resolution and excellent vocal effect. Without the ability to identify the bass frequency, it is impossible to identify whether the bass of the speaker is 42 Hz. Only experts with very rich experience can hear the frequency characteristics and authenticity by their ears. Ordinary enthusiasts do not have the ability to recognize goods by ear.

You can go to Tianlang official website to consult the anti-counterfeiting method of this speaker, or go to Tianlang Store to consult how to identify the authenticity.

Second-hand speakers are not guaranteed in quality. If the speakers have been repaired, they are not original speakers. It is recommended that friends who don't understand speakers don't spend high prices to sell second-hand speakers. Buy a new speaker, the quality is guaranteed, and the new speaker with the same parameters costs more than 3 thousand.

It depends on the price, whether it is bought in official website, whether it is second-hand, whether it has been modified, and the product logo.

More than 3000 XT6 online are reliable. The buyer said it was licensed by the big factory, and the warranty card was also available. The serial number of the box can also identify the authenticity.