The J-45 Studio has a unique bell-like shape, a larger lower bout, and a small round upper bout which gives this new addition to our Advanced Jumbo family of guitars a unique voice. The J-45 Studio is made with Epiphone’s century’s worth of experience in crafting world-class guitars that are meant to be played. Epiphone stands behind every guitar they make with a Limited Lifetime Warranty and Gibson Brands™ Customer Service. (Previously called AJ-220S).