I purchased this cassette adapter to play my ipod touch in my car.  Only newer model cars seem to have a direct line in, or USB input, so I needed to purchase this or an FM transmitter.  I found the audio quality of this device to be superior to the FM transmitters.  However, the adapter worked very poorly out of the package.  It would cause my car tape deck to switch back and forth from "side 1" to "side 2" and eventually eject with an error.  It would fail to play successfully about 80% of the time.