The new Powerstroke Pro Bass Drumheads are made with a 10 mil film, and feature the new Pressure Dampening Profile as well as permanently mounted acoustic foam which will provide maximum volume and projection. This allows users to produce controlled highs, accentuated mid and maximum low range frequencies. The Ultrasonically Welded Profile reduces separation and unwanted noise, which is great for studio use. The Powerstroke Pro is sets the standard for subsonic bass drumheads that deliver unmatched sound, feel and performance. Get yours today at Alto Music!