The Atkin Jumbo model is the largest guitar in the Atkin range, with a select Sitka Spruce top and AAA flamed maple Back and sides. This model is a little thinner than other brands because they believe that helps to kick the sound out of the body, which is a common problem with Jumbos. A power house? Yes, but full of rich, beautiful tone. The Hops Guard has the same features as the standard AJ, but features Atkin's Hops pickguard.