I first noticed the pinging on my Ducky 9008 G2. I went back and count and there are about 12-13 keys that ping. There are only 3 keys (numpad#9, ], leftWin) on my Filco gen 2 that ping. It's not very loud and I only hear it in a quiet room. I took each of those keyboards to work for a whole week and didn't notice the pinging. Also, I'm a light typist and don't bottom out that hard. If you bottoming out all the time, you probably hear it more.