The diminutive Henry-Kloss Model Subwoofer is designed expressly for use with the extravagantly simple Model Two or Model Three Tivoli Audio Stereo Radio. This speaker, aside from exuding Shakeresque elegance, extends the bass response of the Model Two by a half-octave, and is guaranteed to bring a smile to the face of the most critical musical listener. Also includes 15-foot audio cable for easy, instant use with the Model Two Auto On feature turns on and off based on signal presence or absence Dimensions - 6.5 High x 9.5 Wide x 6.3125 Deep With the Model Subwoofer, your Tivoli Audio Model Two reaches a new, all-time low!