All Car CD changers

The Bottom Line: The Sony CDX-GT520 is a decent option for those wanting a reasonably priced stereo to play disc-based audio. While it does support HD Radio, it requires the connection of a clunky add-on module, which is almost more trouble than it's worth.

Specs: Radio / CD / MP3 player, Radio tuner, CD / MP3 player, Audio line-in, Audio line-out, Subwoofer output, System components control bus

The Bottom Line: The Kenwood KDC X890 is a capable head unit that supports a broad range of audio formats. Voice indexing helps counteract awkward manual file selection, although the system's claims that it measures car performance are dubious.

Specs: Radio / CD / MP3 player, Radio tuner, CD / MP3 player, USB, Audio line-in, Subwoofer output, Rear channel output, Front channel output

Specs: Radio / CD / cassette player, Radio tuner, CD player, Audio line-out

Specs: Radio / CD player, Radio tuner, CD player, Audio line-out, Audio line-in

Specs: Radio / CD player, Radio tuner, CD player, Audio line-out