Harman Kardon Sound Systems It only takes one listen to hear the Harman Kardon® difference. Each audio system delivers perfect, full-bodied performance throughout the cabin with powerful lows, crisp, clear highs, and a three-dimensional sound. Harman Kardon truly fulfills on its promise of a full and rich emotional experience. Subaru offers an extensive selection of premium audio systems featuring Harman Kardon speakers and amplification, all designed to deliver unparalleled sound quality. Each system comes with a dedicated amplifier and an array of premium speakers around the cabin to create stunning clarity. Harman Kardon comes standard on select trims of the Subaru Ascent, Crosstrek,Forester, Impreza, Outback, Legacy, WRX, and WRX STI.