Based on the popular AMP diaphragm, the Phelps Mini AMP Diaphragm Elk Call is just as consistent, durable and the sound quality is exceptional for a small call. Some users struggle with the size of the AMP frame and this call will be the ticket. It also features a new narrow tape cut to ensure a good seal for users with a smaller palate. FeaturesOrange Mini AMP Elk Diaphragm: The Mini AMP orange features a light latex for easy calf and cow sounds as well as light to medium bugles.Blue Mini AMP Elk Diaphragm: The Mini AMP Blue features a medium latex and will be perfect for all-around calling.White Mini AMP Elk Diaphragm: The Mini AMP White features a heavier latex and will be perfect for mature cows and large bull sounds.