Edmund's put together a list of the top 10 sound systems in cars over $30,000. The Harman-Kardon came in at #6.
6. 2002 BMW M3 (Harman-Kardon)
BMW has finally begun to put it together in the autosound area. The optional sound system in the M3 boasts 12 Harman-Kardon speakers sprinkled throughout the cabin, including a bounteous pair of 6-by-9 subwoofers along the back deck. Also of note: a pair of well-positioned tweeters in front, plus an elegant, simple no-nonsense head unit, which is the essence of German functionality and design. This system breathes BMW class and distinction.
http://www.edmunds.com/reviews/list/top10/58886/article.html
6. 2002 BMW M3 (Harman-Kardon)
BMW has finally begun to put it together in the autosound area. The optional sound system in the M3 boasts 12 Harman-Kardon speakers sprinkled throughout the cabin, including a bounteous pair of 6-by-9 subwoofers along the back deck. Also of note: a pair of well-positioned tweeters in front, plus an elegant, simple no-nonsense head unit, which is the essence of German functionality and design. This system breathes BMW class and distinction.
http://www.edmunds.com/reviews/list/top10/58886/article.html