Echo Pure Meat Single Reed Duck Call Echo's newest single reed acrylic duck call. The Echo Pure Meat Single Reed Duck Call is made with a great low end. The whines are built in. This call is for the experienced hunter that wants a call to do everything. It has a lot of hold which makes squeals and whines easy. Great tone from top to bottom! A single-reed duck call that offers veteran callers do-everything versatility and exceptional bottom-end whine and squeal. Great for those shy ducks. Rich top-to-bottom range. Acrylic.