How to judge the microphone
Bottom noise test: Insert the Dare Fly D601 receiver into the mobile phone, turn on the microphone, pair the microphone with the receiver, and turn off the noise reduction of the microphone. In a relatively quiet environment, ensure that there is no sound. Record with the phone's own recorder, and then play it back to see how the bottom noise is. The D601 will have a very slight bottom noise. Compared with other similar products on the market, the performance is perfect. Then turn on the first level noise reduction, the second level noise reduction and the third level noise reduction to test and compare respectively. When the noise reduction is turned on, almost no noise can be heard.
Of course, it is recommended to turn off the noise reduction or turn it on relatively low if you want to make the recorded sound more authentic.