I set out two callers tonight with different sound cards. I had a flicker on one and a woodpecker on the other. Called up a 2 coons 2 house cats and a gray fox. I have to admit, Phantom caller and the Praymaster caller has one feature we don't. Never saw a point in it do to the fact I could always mix the sounds. But what sounds to mix? This will be my new way of testing dual sounds on the Loudmouth.