The only building in Quahog that requires D batteries.
Da Boom Box is seemingly a decoration in the game, part of the Endless Summer of Kool-Aid! Event. When tapped on, it brings up the GUI for unlocking The Kool-Aid Man. However, once The Kool-Aid Man is unlocked, Da Boom Box appears in the store for free and becomes a full-fledged building, complete with coin and exp drops.