The Echo Calls 90022 Ace in The Hole Single Reed Duck Call is a premium acrylic call designed for hunters seeking a loud and raspy tone to attract ducks over long distances. Crafted from durable matte black acrylic, this call produces a barking quack that becomes more realistic the farther the distance. Echo's acrylic calls offer louder volume and greater range compared to their polycarbonate counterparts, tuned to sound exactly the same but much louder.