A ball striking device, such as a golf club head, has a face with a striking surface configured for striking a ball, a channel extending across a portion of the sole, wherein the channel is recessed from adjacent surfaces of the sole, and/or a void defined on the sole of the body, wherein the channel has width defined in a front to rear direction and a depth of recession from the adjacent surfaces of the sole at a vertical plane passing through the face center, wherein a ratio of the width to the depth is about 0.8:1 to 1.2:1.