Earphone/Headphone Audio Test app analytics for September 1

8 tools for testing and verifying your headphones, earphones or earpieces: 1. Checking the sound in headphones at different frequencies from 200 to 20000 Hz. 2. Checking the bass (low frequencies) in headphones in the frequency range from 15 to 80 Hz. 3. Checking the sound sweep from 1 to 20000 Hz. Checking the subwoofer from 16-80 Hz, checking the bass from 80 to 200 Hz, checking the midrange from 200 to 2000 Hz. 4. Checking the stereo sound. 5. A tool for cleaning headphones and speakers using special audio signals. 6. Checking and testing the left and right audio channels. 7. Checking stereo sound, music and voice in headphones. 8. Checking the volume and dynamic range of the headphones. It works without the Internet!