The Big Mamma is a sassy, powerful, and extremely "ducky" call. Tuned as a Single reed it can scream loud hail notes and the feed chatter will shatter the sound barrier. As a Double reed it sounds like it has a Hen Mallard is built right in the tone board! The Double reed is full of low end sounds and a little easier to operate than a single reed. Each tone board has a spit/air flow groove cut out to help prevent sticking. All hand tuned by Big Sean to sound like a Live Mallard.