Ping or Pop?
Vibration dampeners come in all shapes and sizes, we even have one of our own with the Pojie logo. Most of them do a good job of dampening the high frequency string vibrations—that “ping” sound you hear when you hit the ball. Some players, including pros, even use a rubber band, which is also quite effective.
But, while these devices absorb the harmonic vibration, they do little or nothing for racquet frame vibration, which can affect arm injuries like tennis elbow. The Pojie however, is designed to attenuate initial impact force, reducing the shock to your wrist, elbow and shoulder.
Because the Pojie is not a dampener, you may want to continue to use one if you like the "pop" sound. And, if you like the auditory feedback you get from the "ping", Pojie won't take that away — just the sting.