You can use this output to connect an Alpine amplifiers or powered subwoofer to build a 2 channel system or add a subwoofer.
A 4 x 50W power amplifier is integrated in the product, enabling superior sound and sufficient headroom for dynamic sound reproduction.
Improved functions, more usability and great user friendliness — that's what Bluetooth Plus stands for! In addition to hands-free operation, BT Plus offers many other convenient functions, including phonebook alphabet search, adjustable volume, text message alert and music playback with DSP sound and display of song, artist and tag information.
Fully wireless, hands-free connection between your Bluetooth enabled cell phone and an Alpine Head Unit.
Expand your listening choices by plugging in your USB sticks into the front panel USB port. There is also a 3.5mm mini jack for MP3 players of mobile phones with music playback.
The MP3 Compatible head units let you play CDs that you've burned with MP3 tracks. You can get 12 hours of music on a single disc. Models with MediaXpander™ enhance the MPEG compression for the full digital quality you expect.
Alpine is ready for iPod® / iPhone®. Bring your favourite music collection to your car, and hear it as you want it to be heard – with exceptional clarity, extended dynamic range and full power.
Parrot Bluetooth capability allows hands-free operation of your Bluetooth-enabled mobile phone with full phonebook access. A noise cancellation function ensures that calls are heard clarly. Parrot software updates provide support for future phones.
This cosmetic feature lets you select the colour of the panel illumination on the head unit from four colours: red, blue, green and amber.
Wireless Remote Control Ready The unit accepts wireless remote controls (sold separately).
The unit is compatible with steering wheel remote control systems so it can replace the factory-installed head unit without loss of this convenient option. Additional parts required !
Adjust the subwoofer frequency and level to get the subwoofer output you want.
Simple, fast and convenient. Your favourite digital music in your car – with Alpine sound.
You can connect Nokia (Symbian™) phones via USB port to play back the music stored on your phone. You can also control basic music playback functions.
Where to Buy 
Featuring Parrot Bluetooth capability, these CD Receivers give you hands-free operation of your Bluetooth-enabled mobile phone with full phonebook access. BT Plus offers many new functions, such as received SMS text message alert, GMS signal strength indicator, automatic phonebook update, alphabetic phonebook search, 5 echo cancellation presets, ID3 tag display when streaming music, battery charge indicator and several more.
You can connect Nokia (Symbian™) phones via USB to play back the music stored on the phone. You can also control basic music playback functions such as play, pause and title skip and search for music by files and folders. The phone also charges while it is connected. Requires 
You can control your iPhone/iPod from the head unit, using Quick Search to find songs fast. Direct iPod Control Mode lets you use the iPhone/iPod interface for direct operation and for viewing information in your desired language. This comes especially handy when a passenger selects the music while you keep your eyes on the road. Connect your iPod® or iPhone® via the CDE-W235BT’s front USB port (requires KCU-455i or the original Apple USB cables that comes with your Apple product). 
Here’s the best way to find your music fast. The rotary knob and Quick Search feature let you easily and quickly browse through your iPod music by playlist, artist, album, song, genre, podcast, audiobook or composer.
Expand your listening choices by plugging your USB mass storage device into the front panel USB port. There’s also a 3.5mm mini jack for MP3 players.
You can adjust the Head Unit’s button illumination color to match your dash. The main button can be switched to green, blue, red or amber illumination, while the other buttons can be set to green or red illumination.
