The memory setting for the sound is easy....
Press the volume **** to set the sub level, fader, balance, bass, mid, treble. Hold the **** on bass/mid/treb to set the boost/cut freq and Q.
Once it'* set, get back to the "main" screen for the source, then hold Menu, look for Audio Preset. Hold the button for a couple seconds, then choose "Memory" to save it. "Recall" recalls the saved settings.
Do that for each source.
It'* somewhat similar to my JVC KD-SH99, with more options.
But, yea, that head unit is pretty cool. I got it from an eBay vendor, IndoAudio. Prices were good, it was right around $200 for the unit, after shipping. They do combine shipping... (First item full price, subsequent items half price shipping). BUT... The shipping from this damn place is SSSSLLLLOOOOWWWW! I wouldn't buy from them again, I'd go elsewhere. There are pleanty of other ebay vendors that have the item for within $10-20.
The next model up from mine, the X890, adds some kinda Wolfgangblahblah D/A converter, and a USB input on a rear pigtail. It'* about $60-80 more.
I installed the CD Changer, also. Just used industrial velcro to hold it to the factory changer bracket, as the new one is shorter than the old one (length wise) and the velcro seems to hold it well. I may add a strap or a couple cable ties to it, since it'* hidden in the CD changer pocket anyway, you only see the top of it with the door.
Oh, and it takes A WAY LONG TIME to upload new images and animations to the unit. The 50 frame animations take about 10 minutes. They're less than 200K. I don't know why it reads data from the CD so slow, it can pull MP3 data off faster when playing a MP3 file. Well, whatever, it'* not like I'm downloading animations every day... only every day for the past 2 days.
I have the steering wheel interface, too. I'll probably be installing that tonite, so the factory radio controls will work with it, too.