an acoustic device configured for use with an audio source . the acoustic device includes a stem portion and multiple branches forming a cavity for passage of an audio signal when connected to an audio source . an array of multiple acoustic devices or nodes may be physically connected to form a tree - like structure for providing amplified sound in an aesthetically and tonally pleasing manner which fills its surrounding with sound . in view of the physical connectability of the individual nodes , an audio outputting device may be form which is easily modified , scaled , and / or re - configured to adjust its tonal properties and directionality .