Phelps Smith Signature Elk Diaphragm

While it is designed for high-level performance, the Smith Signature Amp is user-friendly enough for those still learning diaphragm calling. Its design allows for consistent airflow, which helps beginners achieve clear notes without needing excessive pressure.

The call features a versatile reed tension that allows you to transition easily between loud, piercing bugles for locating bulls and soft, subtle cow mews for close-range setups. It is engineered to maintain clarity across that entire volume spectrum.

This call was developed directly in the woods rather than just in a lab, meaning the reed tension and frame shape are optimized for real-world hunting conditions. It is built to withstand moisture and temperature changes better than mass-produced alternatives.

Most hunters find they need to trim the tape slightly to get a perfect fit against the roof of their mouth. You should trim small amounts at a time until the call sits comfortably without causing a gag reflex or air leakage.

After each use, rinse the call with cool water and let it air dry completely before storing it in a ventilated case. Avoid leaving it in direct sunlight or a hot vehicle, as heat can warp the latex and alter the sound profile.