Orange: The AMP orange elk diaphragm is that lightest latex of the new AMP diaphragms. This is a single reed that produces high pitched cow and calf sounds along with producing immature bull sounds. Black: The AMP black elk diaphragm produces high to medium pitched cow sounds along with producing raghorn bugles with great volume. Green: The AMP green elk diaphragm is a great all-around call. This is a single blue reed that produces medium cow sounds, along with producing medium bull sounds. The green tape is slightly stiffer than normal and has a bitter taste. Grey: The AMP grey elk diaphragm is a great all-around call with excellent volume. This is a single reed that produces medium to mature cow sounds, along with producing medium to large bull sounds. White: The AMP white elk diaphragm has locator-type volume. This is a single reed that produces deep mature cow sounds, along with producing herd bull sounds. Phelps Signature: Every Phelps Signature AMP diaphragm is built to exact specifications and standards. “This is the call I use whether I’m hunting or on the stage.” - Jason Phelps Maverick: The latex in this reed is stretched tight to an optimum point which allows the call will settle in for the longest possible duration of calling perfection. With this in mind, after 20+ hard bugles, the reed will begin settling in and continue to sound better and better. Smith Signature: Every Smith Signature AMP diaphragm is built to exact specifications and standards. “Developed in the woods. I wanted a call that I could get great volume out of for locating, but sweet enough to close the deal with.” - Charlie Smith Pitch Black 1: Has a looser stretch for easy cow calls and all of the bull vocalizations. Very easy to use and quiet when needed. Pitch Black 2: Has a medium stretch similar to the popular Maverick and Phelps Signature diaphragms. This is a do it all call. Pitch Black 3: Stretched tight for ear piercing location bugles as well as higher pitched cow/calf sounds. The best thing about this call is the life you get out of it.
