Phelps External Bands: Reliable Replacements for Your Cow Calls Keep your elk calls in top condition with Phelps External Bands. This pack includes three high-quality replacement bands designed for...

The AMP black elk diaphragm produces high to medium pitched cow sounds along with producing raghorn bugles with great volume.

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...

The AMP green elk diaphragm is a great all around diaphragm.  This is a single reed that produces medium cow sounds and medium bull sounds.

The AMP gray 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...