If you have an iPhone®, then you can add navigation capability to the JVC KW-AVX840 DVD receiver by adding the MotionX-GPS Drive app and JVC's KS-U30 iPod® cable. Even without that, this receiver has a lot to offer. Check it out in this quick demo.
Ken Nail has written about car audio for Crutchfield since 2003, after four years as Crutchfield Sales Advisor, and 10 years as a music teacher. He's an avid music listener, whose favorites are classical and film music. When not chained to a desk, Ken spends most of his time training for triathlons and marathons, and likes getting outside for backpacking, downhill skiing, and bicycle touring. He attended West Virginia University, where he received a Master's Degree in Music Performance and a Bachelor's Degree in History.