The Kohler® DTV+™ amplifier uses Bluetooth® technology to stream and control music from your favorite mobile devices, providing a simple and elegant way to add audio to an existing space, a remodel or a new installation project. Primarily designed for use with the DTV+™ digital shower control system, this amplifier can also be on its own to provide outstanding audio output inside or outside the home. Kohler® Amplifier Module, Series: DTV+™, 20 W, 120/240 V, 50/60 Hz, 4 Ohm, 5-5/8 in W x 3-5/8 in D x 4-1/4 in H