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Alpine iDA-X303

Digital media receiver

26 Reviews

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Item # 500IDAX303

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Our take on the Alpine iDA-X303

Turn the jog dial a little to access Search mode, then scroll line-by-line. Turn and hold the knob to move to Alphabet Search mode — now you can scroll through the alphabet to jump quickly through your lists of artists, albums, or songs. The current song keeps playing, so you won't interrupt the music while you're searching. The convenient "Back" button lets you backtrack through the menus, instead of starting over from the top.

Alpine Authorized Online Dealer

Alpine gives you lots of ways to play your digital music in the car

Have you moved beyond CDs? Alpine designed the iDA-X303 digital media receiver to be the most intuitive solution for using an iPod® in your car. The centrally located jog dial mimics the functions of an iPod's click wheel, so you can locate your favorite tunes in a hurry on the 2-line display. And Alpine's 24-bit digital-to-analog converter gives you excellent sound quality from your iPod.

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Simple iPod navigation and control

Turn the jog dial a little to access Search mode, then scroll line-by-line. Turn and hold the knob to move to Alphabet Search mode — now you can scroll through the alphabet to jump quickly through your lists of artists, albums, or songs. The current song keeps playing, so you won't interrupt the music while you're searching. The convenient "Back" button lets you backtrack through the menus, instead of starting over from the top.

Play your other digital files, too

Throw your favorite MP3, WMA, and AAC files on a thumb drive, and you've got an easy way to stock up on tunes for your next road trip. Or you can also play another USB-equipped music player through the USB slot. No matter what your source, Alpine's built-in amp offers the punch you need to make your music sound great.

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Flexible system-building options

This versatile stereo works with all of Alpine's peripheral gear, including satellite radio, auxiliary input adapter, add-on USB input, or CD changer. Add an HD Radio™ tuner, and you can "tag" songs you hear on an HD Radio broadcast for purchasing later in iTunes®. With Alpine's optional KCE-400BT Bluetooth® interface, you'll be able to answer or place a call with a touch of a button. You can also stream music from a music phone or Bluetooth-capable music player.

Setting up a system with external amplifiers or subwoofers? You'll love the three sets of preamp outputs, along with the ability to control the subwoofer's output level from the stereo. Add the combination of Alpine's PXA-H100 IMPRINT sound processor and the KTX-H100 tuning kit and you'll turn your vehicle into the perfect listening space — the IMPRINT measures your car's acoustics and adjusts the stereo's settings automatically to create a perfect audio environment.

iPod note: If you're going to use your iPod with this receiver, be sure to check Hands-on Research for specific iPod model compatibility with this receiver or its optional iPod adapter.

Information provided by Alpine

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Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.

Product Highlights:

    General features:
    • digital media receiver (no built-in CD player)
    • built-in amplifier (16 watts RMS/50 peak x 4 channels)
    • plays MP3, WMA, and AAC music files from external sources
    • 2.2" 3-color LCD display
    • detachable face
    • iTunes tagging with Alpine's optional TUA-T550 HD Radio™ tuner
    • optional remote control
    Audio features:
    • 2-band parametric equalizer
    • compatible with Alpine's PXA-H100 IMPRINT audio processor and KTX-H100 tuning kit
    • iPod control: direct connection to USB input for newer iPods
    • compatible with Alpine's HD Radio tuner, Bluetooth adapter, CD changer, satellite radio
    • inputs: USB input
    • outputs: 6-channel preamp outputs (front, rear, subwoofer) — subwoofer output has bass level control
    Other features and specs:

    What's in the Box:

    • AM/FM/Digital Media receiver
    • Face
    • Sleeve
    • Trim ring
    • Wiring harness (10-amp fuse)
    • 8" iPod dock to USB cable
    • 80" USB extension cable (with male USB Type A connector on one end and a female USB Type A connector on the other)
    • Hard plastic face case
    • USB plug housing (locks extension cable and plug on radio together)
    • 2 Radio removal tools
    • 4 Flat-head ISO screws (M5 x 8mm)
    • Face fixing screw
    • Owner's Manual on CD-ROM (English/Spanish/French)
    • CD-ROM system requirements
    • Quick reference guide (English/French/Spanish)
    • Customer Care registration card

    Featured Video:


    Alpine iDA-X303 Reviews

    Average Customer Review(s):

    (26 Reviews)

    Alpine ida-x303

    Curtis from Brockville Ont Canada on 11/21/2016

    I've owned the ida-x100 for over 7 years now and have installed in 4 different vehicles, it has it cons but the pros make you forgot After being so simple to use and keeping eyes on the road,I picked up the ida-x303 for my second car.

    Pros: legendary Alpine quality

    Cons: Nun to mention

    Compatible With Ipod 4G iOS 5

    Emmanuel from San Bentio, Texas on 2/4/2012

    I just wanted to add that this stereo is compatible with Ipod Touch 4G running iOS 5. I've been searching everywhere for a review on this but i havent found any at all so there you go guys, IT DOES WORK! I can even keep using other apps while its hooked up to the stereo and playing music except u cannot change the song from the ipod. It looks great and sounds great, the reason i didnt give it 5 stars for sound quality is because that's where imprint comes in. If i had imprint installed then i would give it all 5 stars. It is imprint ready but it is not included so just be aware of that. The imprint hardware will run you about $150 extra or $134 on Amazon.Hope this helped someone decide.

    Pros: Everything is great and i like that you can keep building on it like adding bluetooth and imprint or a remote control. It's basically upgrade able.

    Cons: None really just that there's no remote control included BUT it is RC ready if u want to buy one for it later

    Alpine iDA-X303

    Bovuk from Chicago on 3/3/2011

    Crutchfield Customer Review (What's this?)

    I bought this to replace a older Alpine reciever which had problems one of which the satellite radio stopped working (could not select function). Atter installation, i discovered this radio did not work either which now leads me to believe the problem is with the satellite reciever. Otherwise the radio is great and my wife loves that she can have her Ipod hooked up inside the glove box.



    Works great with iPhone 3G

    Tim from Portland, OR on 2/20/2011

    1986 BMW 635CSI
    Crutchfield Customer Review (What's this?)

    I read a few reviews of people having problems with this deck working with their iPhone 3G. To my experience, I have had no issues at all. It sounds great, and is able to call up my music library quickly. Which is over 1,100 songs on my iPhone.



    Unusable for large USB media

    feldmrob from PA on 1/31/2011

    2002 Mazda Protege5
    Crutchfield Customer Review (What's this?)

    [The following criticism mostly just applies to USB media usage. IPod owners seem much happier.] Using USB & wanna hear a particular artist right when you hop in the car? Forget it. There is no searching until banking is done. That's every time the power cycles, whether you stopped overnight or just for gas. I could almost deal with that if searching would then work, but odds are the song you are looking for isn't in the bank that was searched, and changing banks starts the indexing process all over again. So you wait another 4 minutes, only to find out that you still haven't stumbled upon the correct bank -- try again. Truly maddening, not to mention distracting and downright dangerous. I also suffer from incomplete Indexing, as lots of my music never shows up in any bank, despite it being properly tagged and playable when attached to my PC. Just not enough LCD characters. How many artists named Steve something are in your collection? They're all the same to the X303. Take a look at a picture of this unit. Imagine it is in your dash, and you are grasping the knob like you have to do in order to make a selection. Can you see the LCD? Nope. You can turn the knob, or you can see what the knob is doing, but not both. If the road is perfectly smooth you can try to "fingertip" it. Then if the sun is out all you'll see is the reflection from the passenger window. Whoever designed this thing can't possibly have tried to use it in an actual car.



    New Stereo

    DavL from Ashburn, VA on 1/28/2011

    Crutchfield Customer Review (What's this?)

    The Stereo is nice. It has all of the features I need for my Iphone and the quality is great. The only think i wish was that the docking was permanent. It's a hassel to remove the stereo each time i get out of the car. The case is nice though! I like all of the features I have including the automatic sync with my Iphone and switching between calls and music. Really helpful. Overall a terrific addition to my Miata!



    Mostly happy

    BRich from Atlanta, GA on 9/26/2010

    Crutchfield Customer Review (What's this?)

    Search options could be more user friendly for USB. Very slow to read large Flashdrives.



    Great Stereo Head!!

    Nick from Wolcott, CT on 6/23/2010

    1997 Toyota 4Runner
    Crutchfield Customer Review (What's this?)

    First off I have to thank Crutchfieid for their excellent support. They matched this product, corresponding pocket and wiring harness adapter to my car with great ease and accuracy. They also have great phone tech support for people who don't read and then go to install their stereos but cant because they forgot to pull out stock amps :) On to Alpine. This is a good head for the price. Scratch that, its a fantastic head for the price. Pros: It has FANTASTIC FM radio sound. The 24-bit DAC provides distortion free playback of my MP3s and radio. The head is overall pretty easy to use and navigate through the mp3s on my flash drive. It also comes bundled with iPod support for those who use such devices. My speakers are run un-amped because this little monster gives my speakers enough power to please me. It has plenty of neato addon options like Imprint, HD radio and Bluetooth. Cons: Lack of front AUX jack. This isn't a huge deal because of USB/iPod support. Also, I have to complain about the lack of much EQ capability without the imprint addon. Increasing/decreasing bass and treble levels is sometimes not enough. MP3 support is iffy sometimes, it takes a while for it to read my fairly fast (21 MB/s) flash stick and update the song list. Also, when turning off the car and then starting it again, the head resumes play of the song you were listening to but then starts the playlist over from the top.



    Alpine iDA-X303

    Michael from Raleigh, NC on 6/21/2010

    Crutchfield Customer Review (What's this?)

    Not bad for the price, install and setup was very easy. Only major gripe so far is that it will not see all the music on my Creative Zen Vision:M (20GB of mp3s). For some reason whole sets of Artists and Albums are missing even though they are fine through the player and tagged correctly.



    Alpine IDA X303

    Anonymous from Savage, MN on 3/11/2010

    Crutchfield Customer Review (What's this?)

    I have to admit that I have always been a fan of Alpine, so I may be a little bias. This receiver does it all and sounds great. I currently use my 30 GB IPOD video to store all of my music, so the ability to connect it to this receiver is a great feature. The navigation could not be easier using the search function. I would have given this receiver 5 stars, but the fact that you have to buy the Impulse encoder to optimize the sound seems a little crazy. Don't forget the power pack KTP-445 it makes a great receiver even better BTW, Crutchfield's Customer Service and Technical Support are second to none. The value added from the support makes this purchase worth every penny. I finally found a company that takes care of customers like they should be taken care of. The bottom line is you can not go wrong buying from Crutchfield.



    Nice Stereo, But Can't Play DRM-protected Music

    Jessica from New York on 2/23/2010

    This stereo has lots of features, but it's missing the one thing that I wanted it to do - the ability to play any DRM-protected files. The manual states that DRM files and WMA files with DRM or AAC format files purchased from the iTunes store can't be played on it, either. I don't have an iPod or use iTunes, so I don't know if this is significant, but I would assume since many people purchase music through iTunes and then plan to hook up their iPods and listen through this unit - which is specifically touted as being "dedicated for, made for iPod, and works with iPhone" in Alpine's literature - not being able to play those files would be a real disappointment. The Alpine site says that you can connect MP3 devices using MTP. Since MTP is for DRM files, it seems odd that the stereo won't play these files! So, if you're looking to listen to audiobook downloads from the library, don't count on being able to with this unit. We'll be looking for a headphone jack accessory to play my MP3 e280 through this.



    Wonderul Stereo

    Justin from Oklahoma City on 12/18/2009

    2004 Ford Crown Victoria
    Crutchfield Customer Review (What's this?)

    This is an excellent receiver. I hooked this up to my factory stereo speakers in my Crown Victoria LX Sport and it just totally reinvented the sound. I am looking to rebuild the sound for my vehicle since sound in these vehicles are really geared toward older generations. I had been doing research for choosing the lifeline of my stereo, the main head unit, and am really glad I chose this Alpine. I was not interested in a CD player since I had already uploaded all of my compact discs to iTunes. Being able to have my iPod in the glove box and control it via the unit itself is great. It is really easy to use the single rotary wheel and the menus are not complicated at all, and I have not had any issues with the connectivity or playability of the iPod with the direct connection. To date, I have been using this unit for about eight months. Overall, I am extremely pleased with this purchase.



    Good unit

    shakaponk from TN on 10/5/2009

    2007 Chrysler PT Cruiser
    Crutchfield Customer Review (What's this?)

    I only gave it 4 stars instead of 5 due to the signal loss while using an iPod Touch. It's got GREAT sound, GREAT features, and really isn't that hard to use at all. I do also believe that the sound dropping is an Apple issue due to the fact that I noticed it's worse if you haven't rebooted your iPod Touch in awhile. The only other complaint I would say would be the fact that it only recognizes 10,000 songs. So that kind of limits the size of HDD you can get. Also, be advised that the power it supplies is only 500ma 5V, so make sure the external HDD you get can run on that!!!



    Alpine iDA-X303

    Anonymous from Glasgow, KY on 8/22/2009

    2001 Oldsmobile Alero
    Crutchfield Customer Review (What's this?)

    I installed this into an '01 Oldsmobile Alero the Face plate needed to be modified to fit. The Dash Kit was a 1/2 inch too wide at the top. So i had to grind down the sides and the top corners to fit ( i used a dremmel ) Looks good. Works well Although i do get the odd skip with iPod Nano 4th gen (1st Firmware release) Kinda wish i had bought the iDA-X305. all in all a nice outfit for someone not really into the whole car stereo scene



    sounds awesome

    Robert from Aurora, CO on 6/21/2009

    2003 Jeep Grand Cherokee
    Crutchfield Customer Review (What's this?)

    I installed this unit in like 30min. and it works fine have had no problems reading my ipod nano,



    Alpine iDA-X303

    Carl from Youngstown,Ohio on 5/16/2009

    2006 Jeep Grand Cherokee
    Crutchfield Customer Review (What's this?)

    This head unit is excellent no problems has great looks and features sounds great.



    Alpine IDA-X303

    jrozycki from Minneapolis, MN on 4/26/2009

    Crutchfield Customer Review (What's this?)

    Easy to use. I didn't think of this when purchasing but wish I did. A key factor in a digital player is to make sure you can search artist or song by first letter. On this unit if you want to listen to an artist that starts with a V or at the end of the alphabet you might end up crashing your car because it takes a long time to scroll through all artist to get to V. It never skips when hooked up to an external hard drive. Other than that it's a decent product.



    Alpine iDA-X303

    bryan from dallas, tx on 4/11/2009

    same story as all the others. this unit when playing from an iphone/ipod touch gen 2 skips like an old CD player. i read another review that mentioned turning off the iphone and turning it back on. this seems to work for a short period of time, then it is back to skipping at least once a song, if not more frequently. my first trip with the new unit i ended up listening to the radio for 2 of the 3 hours because i couldn't get any sound from reading the iphone. i tried turning off the car. removing the face plate. nothing worked. when i got home i read the review that mentioned turning off the iphone. it worked for restoring the sound, but still no fix for the skipping. i too wonder if this is an iphone problem or an alpine problem. i have to believe it is an alpine problem. i've not had a problem with various types of amplified speakers or other accessories. do not buy this unit.



    Plenty of room for improvement

    Dave from Denver, CO on 3/22/2009

    I've been an Alpine audio bigot for 20 years and have usually loved what I've bought from them, but not this one. This is my 3rd iPod-ready head unit in the last year. I tried another Alpine, a Sony and now this one. If you have a lot of music (like 30GB), the center wheel doesn't scroll through the artist list fast enough to be useful. To skip ahead by letter, you have to first hit the function key and then push in on the outer wheel ring and twist. Seems this feature could've been executed much better. I've also experienced music dropouts with the iPhone 3G with the added frustration that it skips back to the start of the song each time. It doesn't do it constantly- just enough to be annoying. One final gripe- not having radio preset buttons is a bigger pain than I thought it would be. You have to hit function, push in on the outer ring of the dial, and twist to scroll up and down the preset list. On the plus side, the unit sounds great. Someday, someone will create an iPod UI for the car that's superb and almost spooky in its intuitiveness. When they do, I'll beat a path to their door.



    Audio cuts out with iPhone 3G

    Will from Boise, ID on 3/17/2009

    2003 GMC Sierra 1500
    Crutchfield Customer Review (What's this?)

    I too am experiencing the random audio cut-outs when using my iPhone 3G. They last about half a second, and occur randomly. Other than that, the sound is decent. Pre-amp levels seem a bit low, have to really crank the gains on my subwoofer amp to get the level to match the deck powered door speakers. Display shows too few characters, and there is no way to change the color of the display that I've found. No physical preset buttons - you push the preset button (bottom right,) scroll 1-6 with the wheel and press the search button to select. I also really miss having a mute button. Contrary to what another reviewer said, there is more adjustability than just bass and treble without the add on processor. Pushing and holding the audio button opens up a more advanced "tone" menu, allowing you to set a high pass filter on the internal amp, and set the center frequency and Q for bass and treble. It does come with a decent USB jack and extension cable that is heavily shielded had has a noise choke/coil. Overall, if the sound didn't cut out when listening to my iPhone, I'd like the deck. It has a few shortcomings, but is fairly intuitive, though the button presses can seem redundant. With the cutout problems, I would not recommend the deck.



    If it would have just worked correctly

    enOehT from Canton, GA on 3/14/2009

    2003 Nissan Sentra
    Crutchfield Customer Review (What's this?)

    I was so ecstatic to have this head unit the center nob, the back button, everything you could ask for a digital media receiver. Then I started adding more and more music to my memory stick, ugh. Banking process is terrible. Even more I bought a 16GB Flash Drive to load a good chunk of music, I have yet to get through the banking process without it jsut randomly shutting off and displaying "NO USB DEVICE" So I though it might be power provided from the USB Chip set, not even close, I have tried 9 different sticks and it does the same thing over and over. Im not a big iPod guy so I loved the search by folder aspect, but this is ridiculous, I'm calling Crutchfield tonight to weigh my options. The one great thing is the Sub Level control is only one button away, other than that its plagued by bugs and bad application design.



    iPhone 3G issues, no help from Crutchfield

    Daniel from Huntsville, AL on 3/1/2009

    2005 Ford F-150
    Crutchfield Customer Review (What's this?)

    I like the user friendliness of this Alpine head unit compared with other newer head unit brands. However, similar to one other review listed here, I've been having periodic sound cut outs when using my iPhone 3G. I'm still trouble shooting to determine if this is a head unit or iPhone issue. I called Crutchfield and was simply told 'don't know what it could be'. I've always used Crutchfield for my audio needs, however, the past few experiences with Crutchfield have been very, very disappointing.



    Somewhat disappointed.

    Chris from Manchester, NH on 2/26/2009

    1993 Saab 900
    Crutchfield Customer Review (What's this?)

    Overall, I want to like the iDA-X303. It works well with the iPhone 3G, charging and playing back music via the simple dock connector. For the most part it seems easy to use once you get a hang on how the double-rotary control works. A few negatives that have me wondering about this unit though and made me rate it just 3 stars. I may even return it. 1) You only get basically two EQ settings (Bass & Treble, 7 steps in each direction). There is no Mid-EQ control, no EQ presets (like Rock, Jazz, Country, etc.). To get additional EQ settings? You have to buy an add-on unit & then a tuning kit from Crutchfield. What a joke! If I had known this before buying it, I probably would have went with another brand. Who checks to see what EQ settings are present in a stereo? 2) My music when using an iPhone 3G will randomly stop playing for maybe a 1/2 second before continuing on like another reviewer has mentioned. Almost sounds like how the old CD players would skip after hitting a bump. This is a big dealbreaker & may result in me returning the stereo. 3) Being the X303, you are only going to get a monochrome display that only shows maybe 5 or 6 characters per line at best, which makes reading long titles on songs & playlists very hard, especially when trying to drive.



    Alpine iDA-X303

    Greg from Harrisonburg, VA on 2/17/2009

    I've been using this unit for a few weeks now and save for a small issue, it's been very nice. Installation was straightforward and fit and finish is very good. Sound quality is much improved over my monsoon headunit in my VW and the ipod control is very nice. I have been having sound drop outs with my iphone 3G that last about a half second or less but are still annoying. I'm not sure if it's an Apple problem or an Alpine problem but I'll probably swap this headunit with the IDA-X305 or another brand all together to see if that helps the issue. I don't have a "regular" ipod so I can't confirm how they work but overall it's a very nice headunit and sounds great.



    Alpine iDA-X303

    knedler from Honolulu, HI on 2/11/2009

    2006 Toyota Tacoma
    Crutchfield Customer Review (What's this?)

    I wish i could write a glowing report for this but I was really disappointed in this unit. I really tried to like it and keep from sending it back but in the end, it was a no brainer. This unit had definite issues with my Ipod touch 2nd gen. In shuffle mode, it couldn't get passed 11 songs or so before freezing up. The audio would stop and the track counter would hang. You could enter search mode but you then couldn't get out no matter what you did. You'd have to turn the unit off, pull the head, and reset it for it to work again. I spent an hour on the phone with Alpine to no avail. The ipod was up to date version wise, etc. Ok so I figured I'd just use flash drives. It did play flash drives with no problem but will only operate with 4gb at a time. If you plug in a 16gb full of songs, the 303 will divide it up into 4gb sections called banks. When first playing a bank it has to index the files. This takes 2 minutes for a full 4gb and during which you can't search for a song. Every time you switch banks, it has to go through this banking process. It was extremely annoying. I'm sending it back. Crutchfield is awesome though as most of you know :)



    Alpine does it again

    kev from Baltimore, MD on 2/10/2009

    Crutchfield Customer Review (What's this?)

    I purchased the X303 knowing that Alpine has taken over the market when it comes to I-Pod connectivity (based on another, older model I purchase for my wife's car). Not only is the click wheel very user friendly, but the stereo has made my stock speakers come to life! Who knew all those lows were there and I could get such crispness in the mid and high ranges... Positives - looks great, great sound, ipod connectivity is very functional (the search function is very efficient and includes percent skip and alphabet skip)and the stereo has room to expand (add amp, subwoofer, bluetooth for a phone or Satellite radio (please note there is no CD player on here, so you have to be ready to move into the new age of digitial music!)) Lots of options to turn off certain features if you are not using them so you don't have to scroll through them when using the source button, removeable face. Negatives - the screen can produce a glare so I find myself leaning over sometimes (some of this is a result of polarized glasses). Connectivity although phenomenal once connected might take a plug in or two before it recognizes the device (for the I-Touch). Although it doesn't bother me at all, some might not like the fact that you have to scroll through your favorites as opposed to having 2 fm, 1 am and 6 buttons. Overall, I am extremely pleased with this product and of course more then pleased with crutchfield as always! The kit was a quick fit and it took me about 45 minutes to install.




    Hands-on research

    Features and Specs

    AUX Input Optional
    Audio/video Input ---
    USB Input Rear
    CarPlay No
    Android Auto No
    Siri Control No
    Android Control No
    Memory Card Slot USB memory
    Bluetooth Compatible Optional
    Satellite Radio Ready Both
    HD Radio Optional
    Navigation ---
    iPod Compatibility
    Full size Classic/5Gen
    Nano Nano6/Nano5/Nano4/Nano3/Nano2/
    Touch Touch4/Touch3/Touch2/Touch1
    iPhone Phone/Phone3G/Phone3GS/Phone4
    RMS Power (CTA-2006) 16 watts
    RMS Power (Manufacturer) ---
    Peak Output 50 watts
    RMS Power Bandwidth 20-20kHz
    Preamp Outputs 6-channel
    Sub Preamp Outputs Yes
    Switchable Rear Preamp Outputs No
    Video Screen No
    Preamp Voltage 2 volts
    Display Color White/Blue
    Key Button Color Blue
    EQ Bands 2
    Wireless Remote Optional
    Steering Wheel Control Compatible Yes
    Parts Warranty 1 Year
    Labor Warranty 1 Year
    FM Sensitivity 9.3 dBf
    European Tuning No
    Seek/Scan Seek
    Radio Data System No

    Product Research

    Overview: The Alpine iDA-X303 is an in-dash digital media receiver with an AM/FM tuner, a rear-panel USB input, and a 2.2" two-color LCD screen, but no CD slot. You can connect and control an iPod, a USB "thumb" drive, and a CD changer; and the unit is HD Radio ready, Bluetooth ready, and Satellite radio ready. The iDA-X303 is a dedicated receiver that provide seamless control of your iPod, iPhone and many other popular digital devices right from the head unit. The iDA-X303 receiver offers enhanced features for a more robust iPod-listening experience that meets the specifications for "Made for iPod" and "Works with iPhone" compatibility.

    Display Features
    Audio Section
    Sound Processing
    Radio Functions
    Aux/USB/iPod Connectivity
    Bluetooth/Remote Control

    Display Features

    Detachable Face: The head unit's front-panel detaches from the chassis to deter theft. The unit comes supplied with a hard plastic face case to protect the detachable face when you have it off the chassis. A face-fixing screw is supplied for making the face non-detachable, if desired.

    Two Color LCD Display: Select from four different screen view options:

    • Song number and elapsed time
    • Song title and artist name
    • Song title and album title
    • Calendar/Clock display

    Calendar/Clock Display: Using the View button, you can select the calendar/clock display on the front panel LCD. The clock can be set to 12 or 24 hour display, and the calendar can be displayed as M/D/Y (month/day/year), D/M/Y, or Y/M/D. When the calendar/clock display is given display priority, the time and date are displayed even after the unit is turned off. The calendar/clock display can be turned on or off with the View button when the unit is powered off.

    Display Dimmer: The LCD screen and the button illumination will dim when the vehicle's headlights are turned on. You can also turn the dimmer off in the menu if you prefer. The orange illumination wire in the supplied wiring harness must be connected to the vehicle's headlight circuit in order for the dimming feature to work. You can also set the illumination of the head unit manually.

    Double-Action Rotary Encoder Knob: The iDA-X303 comes with a large Double-Action Rotary Encoder Knob for maximum control over all music search functions like QuickSearch for finding your songs or adjusting your volume.

    Angle Mounting: Alpine recommends mounting the iDA-X303 no more that 35° above horizontal.

    Audio Section

    CEA-2006 Compliant: The specifications given by Alpine for the built-in amplifier comply with the CEA-2006 mobile amplifier power testing and measurement standards from the Consumer Electronics Association. All manufacturers who comply with the standard can display the CEA-2006 logo on their product.

    • CEA-2006 Power Rating: 16 watts x 4-channel
    • Max Power Output: 50 watts x 4-channel

    Sound Quality: The iDA-X303 uses clean digital connections and a 24-bit Burr Brown DAC (digital-to-analog converter).

    Bass and Treble Controls: The head unit features independent Bass and Treble controls that allow you to adjust each setting +/-14 dB in 2 dB steps. The center frequencies are adjustable (60, 80, 100, and 200 Hz for bass and 10, 12.5, 15, and 17.5 kHz for treble) and the bass bandwidth is adjustable (from narrow to wide in four steps).

    Loudness: Loudness introduces a special low and high frequency emphasis at low listening levels to compensate for the ear's decreased sensitivity to bass and treble sound at low volume.

    HPF: The high pass filter (HPF) removes the lower bass from the front and rear speaker and line level outputs. HPF options are 80 Hz, 120 Hz, 160 Hz, and off.

    Subwoofer Pre-out: In addition to the front and rear 2-volt preamp outputs, there is a dedicated 2-volt subwoofer preamp output with variable level adjustment of 0 to 15. You can select either System1 or System2 for the desired subwoofer effect:

    • Subwoofer System 1: subwoofer level changes according to the main volume setting
    • Subwoofer System 2: subwoofer level change is different from the main volume setting; even at low volume settings, the subwoofer is still audible

    Power IC Off: When an external amplifier is powering all the speakers in the system, you can turn the internal amp off, which will improve the sound quality.

    Interrupt Feature: When a device having the interrupt feature (such as a cellular telephone) is connected to the receiver, the audio signal will be automatically muted whenever the interrupt signal is received from the device. The supplied wiring harness contains a pink/black Interrupt lead that needs to be connected to the device's interrupt signal connection.

    Sound Processing (with optional PXA-H100)

    Imprint: With the addition of the optional PXA-H100 Imprint box (500PXAH100, sold separately) and KTX-H100 tuning kit (500KTXH100, sold separately) a car's inherent acoustic shortcomings can be overcome with the MultEQ feature. Imprint also gives you much more sound adjustment flexibility as detailed below.

    MultEQ: MultEQ, developed by Audyssey Labs, automatically optimizes the audio for the listening environment inside your vehicle. The Imprint kit includes the hardware, software, and microphone necessary to measure multiple positions in the car and capture frequency and time domain information from the vehicle's actual acoustical environment. Once the car's speaker location delays are measured, along with the frequency peaks and dips caused by the absorptive and reflective materials in the interior, MultEQ creates a set of equalization filters to correct the frequency response and time domain problems for each speaker in the vehicle. It also removes sound distortion caused by the specific acoustical problems in the vehicle. This optimizes the sound reproduction to the specific vehicle listening environment with much greater precision than can be achieved using typical graphic or parametric equalization. The result is a more accurate soundstage and smoother, more natural sound optimized to match your vehicle.

    Equalizer: 10 typical equalizer settings are preset for a variety of musical source material. Select from Flat, Pops, Rock, News, Jazz & Blues, Electrical Dance, Hip Hop & Rap, Easy Listening, Country, and Classical. You can also save six custom EQ curves you create by adjusting the parametric or graphic EQ:

    • 5- Band Parametric EQ: The Parametric EQ allows you to adjust the following 5 frequency bands in 1/3 octave steps from -6 to +6 dB at a bandwidth Q factor of 1, 1.5, or 3
      • Band 1: 20 Hz to 80 Hz
      • Band 2: 50 Hz to 200 Hz
      • Band 3: 125 Hz to 3.2 kHz
      • Band 4: 315 Hz to 8 kHz
      • Band 5: 800 Hz to 20 kHz
    • 7-Band Graphic EQ: The built-in Graphic EQ allows you to adjust the following 7 frequencies from -6 to +6 dB
      • Band 1: 63 Hz
      • Band 2: 150 Hz
      • Band 3: 400 Hz
      • Band 4: 1 kHz
      • Band 5: 2.5 kHz
      • Band 6: 6.3 kHz
      • Band 7: 17.5 kHz

    Crossover: The active crossover can be used as a 2.2 channel (3-way; low-pass subwoofer, band-pass midrange, high-pass tweeter) or a 4.2 channel (2-way; high-pass front and rear, low-pass subwoofer). A crossover limits the frequencies delivered to a given speaker, so you send only the frequencies for which the speaker is well suited. The crossover adjusts the high pass filter or low pass filter of each band along with the slope and output level. You can adjust the following crossover settings:

    • 4.2 Channel:
      • High Pass Filter: the front and rear outputs are individually adjustable; crossover from 20 to 200 Hz in 1/3 octave steps with a slope of Flat, 6, 12, 18 or 24 dB/oct, additionally you can adjust the output level from -12 to 0 dB
      • Low Pass Filter: the subwoofer output can be stereo or mono; crossover from 20 to 200 Hz in 1/3 octave steps with a slope of Flat, 6, 12, 18 or 24 dB/oct, additionally you can adjust the output level from -12 to 0 dB
    • 2.2 Channel:
      • Tweeter/High Pass Filter: crossover from 1 kHz to 20 kHz in 1/3 octave steps with a slope of 6, 12, 18, or 24 dB/oct, additionally you can adjust the output level from -12 to 0 dB
      • Midrange/Band Pass Filter: a band pass has both high pass and low pass filters; HPF 20 to 200 Hz in 1/3 octave steps with a slope of Flat, 6, 12, 18 or 24 dB/oct; LPF from 20 Hz to 20 kHz in 1/3 octave steps with a slope of Flat, 6, 12, 18 or 24 dB/oct, additionally you can adjust the output level from -12 to 0 dB
      • Subwoofer/Low Pass Filter: the subwoofer output can be stereo or mono; crossover from 20 to 200 Hz in 1/3 octave steps with a slope of Flat, 6, 12, 18 or 24 dB/oct, additionally you can adjust the output level from -12 to 0 dB

    Time Correction: The time correction feature delays the audio signal to the speakers closer to the listener. This effectively creates a perception of increased distance for those speakers. Time Correction allows the listener to be placed at an equal distance from all speakers for optimum staging. You can adjust the distance of each speaker and subwoofer (6-channel) to the listener from 0 to 132.7 inches.

    Media Xpander: The MX (Media Xpander) function makes vocals or instruments sound distinct by restoring sound quality typically lost during recording or transmission; this function helps restore audio information that becomes obscured when audio is compressed. The MX function can be applied to all sources, except AM radio. There are three settings and each source can have its own setting.

    Radio Functions

    AM/FM Tuner: The Alpine iDA-X303 features a built-in AM/FM tuner with manual, seek, and preset tuning.

    Satellite Radio Ready: There are several options for connecting an optional XM or SIRIUS Satellite Radio receiver to this receiver:

    • XM Satellite Radio: To receive XM Satellite Radio connect the optional CNP2000UCA XM Tuner and the Alpine CNP-ALP1 adapter cable (package item number 700XMALP2, sold separately).
    • SIRIUS Satellite Radio: There a two ways to connect a SIRIUS tuner to the iDA-X303:
      • Universal SIRIUS Tuner: you can connect the optional SIRIUS SC-C1 SIRIUS Connect Universal Vehicle Tuner, along with the Alpine KCA-SC100 Sirius Satellite Radio interface (700SIRALPC, sold separately) directly to the head unit
      • SIRIUS Plug and Play: the KCA-SC100 Sirius Satellite Radio interface and the SCVDOC1 SiriusConnect vehicle docking kit (700SIRALPP, sold separately) allows you to integrate many SIRIUS plug and play receivers; compatible tuners include the Sportster, Starmate, Stratus, and Stiletto; you can control the satellite receiver from your head unit and use the Quick Search feature to browse all artists and songs currently playing on all channels; the SIRIUS text information also appears on the head unit display
    • Auxiliary Input: A portable satellite radio receiver, such as the XM Delphi SkyFi3 or SIRIUS Sportster, can be connected to the head unit via an auxiliary input adapter (500KCA121B, sold separately). You cannot connect this auxiliary input and a CD-changer at the same time.

    Note: A subscription is also required to receive satellite radio programming from SIRIUS or XM.

    HD Radio Ready: The iDA-X303 can receive HD Radio signals, including multicast broadcasts, when the TUA-T550HD HD Radio Tuner Module ( 500TUAT550, sold separately) is connected via the Ai-NET connector. The digital seek function allows you to search for only HD Radio stations if you prefer.

    Aux/USB/iPod Connectivity

    USB Memory Mode: The iDA-X303 can play MP3, WMA, and AAC files stored on a USB Memory device (also known as a "thumb drive") formatted in FAT 12, 16, or 32. MP3 files can be recorded with bit rates of 32-320 kbps, WMA files with bit rates of 16-320 kbps, and AAC files with bit rates of 8-576 kbps. The unit has a Bank function that automatically divides every 1,000 songs stored in USB memory into individual banks to make searching and playing back a song easier. Each bank contains 1,000 songs, in the order they are stored in the USB memory; up to 10 banks (10,000 songs) can be recognized. The unit's display shows song, album, and artist title, and elapsed time. If no tag information exists, the display shows the track number and elapsed time. During MP3/WMA/AAC playback from a USB memory device, you can activate the search mode to locate a specific folder or file by name. You can repeat the current track or current folder, and play the tracks in the current folder or all of the tracks in the current memory bank in random order. Additionally you can connect and control MP3 players like the iRiver Clix, Creative Zen, or Toshiba Gigabeat, using the MTP protocol.

    Built-In iPod/iPhone Interface: The iDA-X303 uses a rear-panel USB connection (80" USB cable included) and comes supplied with a 6" iPod dock connector cable to connect select iPods and provide ultra-fast digital data transfer so songs are loaded instantly through the receiver. The iDA-X303 allows direct connection, high-quality audio playback, music navigation, information display, and charging of your iPod/iPhone using a USB connection.

    • iPod/iPhone DAC Bypass: With the USB connection you get the fastest speed available and a direct digital connection to the unit's 24-bit DAC. Sound quality is maximized by using USB along with the 24-Bit D/A converter, allowing for an incredible Signal to Noise ratio of 105dB.
    • Information Display: You can view Artist, Album, Song Information and Song Number right on the head unit's display. You can choose between three display modes (Track Number/Elapsed Time, Song Name/Artist Name, or Song Name/Album Name).
    • Music Navigation: The iDA-X303 provides various music navigation controls so you can find the music you want stored on your iPod or iPhone.
      • iPod/iPhone Playlists: You can quickly and easily search through all of the music contained on your iPod/iPhone through Playlist, Artist, Album, Song, Genre, Podcasts, Audiobooks, or Composer searches.
      • Percentage Search: For especially large music libraries, Alpine created the Percentage Search function to use the head unit's preset buttons for quick jumps to specific parts of the list. You can skip through your music in 10% increments.
      • Alphabet Search: You can even use Alphabet Search to jump through your lengthy list of music by skipping through the letters of the alphabet. Once you have the letter you want, simply scroll to the exact song.
      • Shuffle & Repeat: During iPod playback, you can activate any of the following playback modes: Shuffle Album (an album in the iPod is selected at random, and is played back in the album song order), Shuffle Song (all songs in the currently selected mode are played back in random order), or Repeat Play (a single song is repeatedly played back).
      • Back Button: Instead of starting all over from the search menu, you can simply press the Back button on the receiver to go back one step (works just like your iPod). When you are playing a song if you press the back button it will take you back to the place in the menu where you selected the song. 
    • Charging: The Alpine iDA-X303 charges your connected iPod/iPhone when the unit is turned on.

    iPod/iPhone Compatibility Chart: The Alpine iDA-X303 is "made for iPod/iPhone" compatible and supports the following Apple iPod & iPhones (as of Sept. 2010):

    iPod/iPhone Model Gen. Software Media Type Control Type Display Type Charge
    Audio Video Headunit iPod/iPhone Song/Artist Text Track Info
    dock connector 3rd N/A N N N N N N N
    4th N/A N N N N N N N
    mini 1st N/A N N N N N N N
    2nd N/A N N N N N N N
    video 5th 1.3.1 Y N Y N Y Y Y
    classic 80GB 1.1.2 Y N Y N Y Y Y
    120GB 2.0.1 Y N Y N Y Y Y
    160GB 1.1.2 Y N Y N Y Y Y
    nano 1st 1.3.1 Y N Y N Y Y Y
    2nd 1.1.3 Y N Y N Y Y Y
    3rd 1.1.3 Y N Y N Y Y Y
    4th 1.0.3 Y N Y N Y Y Y
    5th 1.0.2 Y N Y N Y Y Y
    6th 1.0 PC Y N Y N Y Y Y
    touch 1st 3.1.2 Y N Y N Y Y Y
    2nd 3.1.2 Y N Y N Y Y Y
    3rd 3.1.2 Y N Y N Y Y Y
    4th 4.1 Y N Y N Y Y Y
    iPhone 2G 3.1.2 Y N Y N Y Y Y
    3G 3.1.2 Y N Y N Y Y Y
    3GS 3.1.2 Y N Y N Y Y Y
    4 4.0 Y N Y N Y Y Y

    Note: You must use the supplied cable for iPod/iPhone operation (the USB/iPod dock cable which comes with your iPod/iPhone will not function). The controls on the iPod are not functional when connected. This unit does support the iPod Full Speed connection. Apple iPod/iPhone software updates may change functionality results. If you download a newer software version, you may need to reset the headunit and your iPod/iPhone to regain functionality. If this doesn't work, you may need to revert to the older software version or wait until an newer software update is available.

    iTunes Tagging: When you add Alpine's HD Radio module (500TUAT550, sold separately), and you hear a song you like, simply press and hold the iTunes Tagging button on the iDA-X303. This iTunes Tagging feature lets you Tag songs you hear on HD Radio stations and stores the info on your connected iPod. The next time you connect your iPod to iTunes, you will be able to preview your selections and then purchase and download them from directly from iTunes.

    Optional Auxiliary Input: With the optional KCA-121B Ai-NET/RCA interface cable (500KCA121B, sold separately) you can input audio from an auxiliary source unit, such as a TV, VCR or portable unit through the head unit's AI-Net port.

    Note: When using this auxiliary adapter, you cannot connect a CD-changer to the head unit.

    Bluetooth/Remote Control

    Bluetooth Interface Ready: With the optional KCE-400BT Bluetooth adapter (500KCE400B, sold separately), you can make and receive calls hands-free on your Bluetooth-capable cellular phone, and communicate through a microphone (included with the Bluetooth interface) and your vehicle's speakers. In addition to the wireless connection and hands-free operation, you also get caller ID, phone book access, and on-screen call information. With select compatible phones with streaming audio capability, you can listen to and control music stored on your phone and have it stream through your Alpine system.

    Optional Wireless Remotes: The iDA-X303 does not include a remote control. It is compatible with two optional wireless remotes; RUE-4190 ( 500RUE4190, sold separately) and RUE-4202 (500RUE4202, sold separately).

    Steering Wheel Remote Compatibility: The unit also features an OEM steering wheel remote control input on the rear of the unit that lets you keep your vehicle's factory radio steering wheel remote controls when used with the optional PAC SWI-JACK Steering Wheel Control Interface Adapter (127SWIJACK, sold separately); or the optional Metra ASWC Steering Wheel Control Interface Adapter (120ASWC, sold separately).

    Note: Please consult the Crutchfield Car Selector to see if your vehicle is compatible.

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