I have one of these in my car and I love it. I was looking for a cd player that had some of the more high end features like 24 bit D/A converter, 4V preamp outputs, and USB input, but I didn't want something that looked like it came out of a spaceship. I've noticed a great improvement in the sound quality since installing this cd player. The 24 bit D/A converter really makes a difference in what you can hear on the cd. Also, having the USB drive is great.
Removed a 2007 Pioneer DEH3900mp and installed one of these, did not change one speaker, and I noticed a HUGE difference in sound quality. My subwoofer suddenly sounded super tight and hit way harder in a nice way. I can't believe how much difference a quality HU can make! The rear usb input cable looks super clean tucked away in my glove box too. I can't wait to have more time to play with it and really see what it can do!