The HMX Aperol linear switch is going to be one of the clackiest switches you will ever see. The stem material and the bottom housing material greatly determine the overall pitch and loudness of a switch; In the case of Aperol, it has a POM stem and a P7 bottom housing for that ultimate clackiness.

The P7 material is a new nylon blend created by HMX which is PA66 with 50% of fiberglass. We all remember that bottom housings such as P2 or P3 already have a loud and clacky sound, and they only have around 30% of fiberglass added. Imagine what 50% of fiberglass could do!