Abstract: Described herein are modular speaker systems including a plurality of wireless speaker modules configured to output sound in a first arrangement and in a second arrangement, in which the first arrangement is different from the second arrangement. In the first arrangement, at least one speaker module can be in physical contact with at least one other speaker module. In the second arrangement, the at least one speaker module can be physically separated from the at least one other speaker module. The plurality of wireless speaker modules may be arranged in any orientation with respect to one another.