Let's introduce a special headphone, below is the panorama.

Number: USB-0001
     Taking the spirit of HIGH QUALITY & ENDLESS INNOVATION of JETION, this type of HEADHPONE, which integrating the USB connection and the digital volume adjuster. If adopting traditional audio frequency transmission, it's easy to be interfered by the complex electromagnetic radiation nearby and getting the rustle. Nevertheless, the best choices for solving the problem is to adopt the shield or digital transmission. The technique of shielding wire is relatively complex and high cost, that restricting the use of AF transmission. However, the request of digital transmission is not such high as shield, furthermore, it can revert every data accurately. And solve the electromagnetic disturbance radically. There's choke in the winding that can filter high frequency and carrier from outside efficiently. 
 

Outline and excellent features:
The sample sent for test is alternate pearl white and blue. It's capacitive MIC at the bottom of the adjustable stainless steel winding with argentine. It's sententious. There are two silver volume adjusters and one indicator on the blue digital line. It's switching on when the indicator on, and working when it's glimpsing, 24 grades of volume adjusters in the digital line. Digital line controlling design can avoid the connection defection because of the connection oxygenation of the traditional resistance line controlling. It's significant changes and seldom seen in the market until now. It let the headphone to realize digital replacing of the mechanization.
 

Audition part:
We choice the popular song as the headphone's impedance is 32Ohm. Rock and roll, lyrics, and light music. The simulation 5.1 effect is much better then expectation. The bourdon is strengthening but not romanced intentionally. Even it had been there when watching the new film acted by Mr. Jacky Chen. The bourdon of is outstanding. We can see the USB-0001 is emphasis on the bourdon, and excellent! You can taste more when you hearing the original CD of game , you can recognize each voice clearly even of the noisy parts.
It's satisfy of the microphone too, no noises with sensitive receiving. The light breathing also can be clear recognized. But there's a little defect that you can hear a bit of electric current when turn the volume to the highest. However, this is the common fault of the type. It can be neglected when recorded with medium or low volume.