Pioneer DEH-P4000UB In-Dash CD/Mp3/Wma/iTunes AAC/Wav Receiver

CD receiver with built-in MOSFET amplifier (14 watts RMS CEA-2006/50 peak x 4 channels) * built in iPod control -- no adapter necessary, but adding Pioneer's optional connecting cable lets you leave your iPod cable at home * compatible with optional Pioneer Bluetooth adapter, satellite radio, HD Radio tuner, CD changer * inputs: auxiliary input (front), USB input (for Windows Media devices, USB storage devices, and iPod) * outputs: 6-channel preamp outputs (front, rear, subwoofer) * compatible with most factory steering wheel audio controls (adapter required) *

I have this unit in my car and i really love it. I never have to make cds anymore. I just bring my flash drive around and load it with music easily, then just plug it in and hear it boom! I love the simple ipod control. If you plug an ipod in the ipod screen goes blank and displays a pioneer logo across the screen. Then you able to control the ipod with the remote or the actual receiver. Im planning to add the HD Radio unit to this so i can listen to those stations too. One other thing i really like is the great controls for you sub woofers. I have my Pioneer TS-W257D4 really perfectly set with the great tweaking options available on this unit. I really recommend it and for the price you get alot of great features.

Great unit. We bought 2 mainly because of the USB port. No longer do we have 50 CD's all over our cars. We put all the songs on a 1 or 2G thumb drive and plug it in. Pioneer's Supertuner brings in stations more strongly than our old factory radios. I really recommend the thru-amazon dealer we purched the units from as well...first class speedy shipping. 5 stars all-round.

I bought this for my sister and she was really happy. Excellent radio I recommend it.

I was looking for a receiver for my new truck camper and already had the DEH-5000 in my Super Duty.The two-line display of that unit to be too distracting and found that the DEH-4000 had similar controls and specifications, including USB plugin for iPod. Installation was straight forward with clearly written instructions. Yes, you do have to read the manual, some wires were clearly labeled.

Sound seemed equal to the DEH-5000 as the specifications indicated. Great unit, not pricey with good features. Can highly recommend. Vendor shipping was fast, reliable store, would use again. Also has plugins to add satellite or other auxiliary input later.

I've never undertaken any kind of car audio or electronics work. I decided to try my hand at it with this one and bought the head unit (installation at our local big box store would have been free, but I wanted to learn this for future reference). I have a 99 Saturn and the existing head unit was an aftermarket deck as well. This is important only because it meant that I didn't have to buy any extra parts to install this (as the existing aftermarket deck had already warranted its own wiring harness and dash kit). The install went pretty smoothly considering it was my first. I wound up splicing some wires together using some crimp connectors. Getting everything back into the dashboard took a little finesse, but wasn't complicated.

If you're going to do this yourself, my only reminders would be to:

1. read the install instructions first
2. disconnect the negative terminal from the car battery before starting
3. start by connecting the ground wire from the stereo to the dash frame before any of the other wires
4. Make sure you have plenty of extra USB cable run through to your glove box...or wherever you're running the USB extension cable...as this will not be easy to do after everything's installed, and
5. reconnect the car battery and test the sound before putting everything back in the dash (I didn't think to do this, and ended up having to take it all out again when I realized one of the speakers wasn't getting sound because a wire had become disconnected)

Installation aside, the unit sounds great and was worth the work.

However, one detail I haven't seen mentioned in other reviews for this unit has become apparent when using a USB flash drive with the deck (and MP3 CD's, too, for that matter). This model does not support .M3u playlists; a detail that's buried deep in the owner's manual in subscript. What this means for the user is that when you plug in a USB drive with, say, 800 songs on it, it will not recognize a playlist order...only the order in which the songs were dragged/copied onto the drive. In my case, I have my computer natively set up to organize all music by artist folder/album folder/file name. When I plug in my 8 GB drive, it plays all the songs from one artist, then all the songs from the next artist, and so on.

Because of this, the random play option on the unit is very necessary. However, it will only randomize the order of songs within a given folder. Again, not very useful as a shuffle feature if I have 26 folders sorted by artist. Adding to the confusion and limited randomization is the fact that, in random play mode, skipping to the next song will not bring you to the next random song, just the next song in the folder. For example, during random play mode, if you're listening to the randomly-selected track "M" and you're bored with it and decide to skip to the next song, going forward one track will simply bring you to track "N" as opposed to a new randomly-selected track (say, track "R" or track "B"). I won't belabor this point, but suffice it to say that this can be frustrating when using a USB drive with 800 tracks and when true shuffled playback is desired, and keeping in mind that playlists are not supported.

This may be a minor issue, but I really value randomization in my music listening, and having all my songs clumped together by artist takes some of that away from my listening experience. Perhaps, though, this won't bother most users of this stereo. All around, I'm still happy with my purchase, and would do it all again if faced with the need.