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AP4-CH21 Aftermarket integration for select 2007-18 Chrysler with factory Amp

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  • $199.98
Market price: $279.95, you save $79.97
AP4-CH21 Add-an aftermarket Amp interface for Chrysler, Jeep, Dodge with factory amp
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  • Net weight
    0.89 lbs
  • Part Number

Many customers are unhappy with the factory sound systems in their cars and opt to replace or upgrade for better sound. Most if not all factory systems sound good but lack bass. The AP4-CH21 version provides a line output signal and remote turn-on signal for adding an aftermarket amplifier to select 2007-18 Chrysler, Dodge, Jeep with OEM amplifier usually branded Alpine, Beats or Harmon Kardon etc located behind the glove box. To identify these systems, look for logos on door speakers, tweeters, dash speakers or the subwoofer to confirm if the vehicle has a compatible amplified system. The Ap4-CH21 uses the full range fixed level head unit output in conjunction with CAN-BUS messages and delivers a 5V Pre-Amp signal to 4 outputs (FR, FL, RR, RL) with fading and balancing capabilities. A +12 volt 2A remote amp turn-on wire is also provided so that your aftermarket amp will turn on/off with the radio. In order for the AP4-CH21 to function correctly, the factory amplifier MUST remain connected to the vehicles wiring. If OEM Amplifier has been removed or there is no Amp, the AP4-CH21 will not work.
» Can be used to upgrade the entire sound system or just part of it thanks to retention of the original amplifier
» Enables the addition of a subwoofer system to the original sound system
» Variable volume, fade, balance, bass, mid and treble audio settings
» Front, rear, sub preamp outputs (5 volt RMS)
» Provides flat audio output for a solid audio foundation
» Customized OE bass, mid and treble center frequency selection
» Retains uConnect, Bluetooth audio and all warning chimes
» Plug & play installation
» Sub level controller
» Optional TOSLINK optical output (APA-TOS1 sold separately)
» Provides 12V+ remote wire to trigger amplifier
» 4 Channel RCA output with Fade and Balance capabilities
» Provides variable RCA output based on the level of the Can Bus network
» Retains factory amplifier. The AP4-CH21 will not work without the factory AMP.

Avoid Costly Returns. Click here for Installation Guide.

The factory amplifier MUST remain connected to the vehicles wiring. Vehicles without factory amp are not compatible.

Defective returns:
Our return policy differs from than of other online merchants and we encourage all customer to read our Return policy page it in its entirety prior to ordering.
Defective returns are eligible for warranty repair or replacement service: Within the first 10 days, Discount Car Stereo will replace any defective or damaged part and provide a pre-paid return label (US Customers only). (Pre-paid labels are not issued for other return reasons).
After 10 days of receipt, customer covers return shipping cost, however we cover shipping cost to supplier/manufacturer, and to ship replacement back to you. If original purchase can't be replaced (discontinued etc), we reserve the right to provide a substitute part of higher or equal value. Any claims for missing parts must be made within 7 days of delivery.
We strive to avoid costly returns by providing our customer with as much product information and applications. Click to read the full return policy page.

Gone are the days when customer had to call or email to obtain shipping rates. At Discount Car, shipping rates are automated and calculated in real time based on cart contents, weight and destination. To get a shipping quote simply add items to cart, follow the checkout process by filling address details and in seconds the online shipping calculator provides real time rates and shipping methods. We ship throughout the USA, Canada and select international destinations (See country drop-down in checkout page for list of international countries or visit our Frequent ask questions page).
Our family owned and operated specialty store makes every effort to get your order processed and shipped at soon as possible; however any products with this logo requires assembly and additional time (usually 2-3 days) to assemble (build) after which it is shipped using shipping method selected at checkout. Paying for a faster shipping method (e.g. Express mail, Priority mail) for parts requiring assembly, does not speed up assembly process; however, it does speed up delivery time.
90% of our products require assembly and identified with "this logo" in image area of product page.
Delivery time for in stock products requiring assembly= Assembly time (2-3 days) + transit time (your shipping method).
Example: Order our very popular Corvette Bluetooth C5CD-HF and choose "USPS Priority Mail (2-4 days) shipping. Expect delivery 5-7 business days after order placement.
Please contact us first regarding time sensitive deliveries.
Parts not requiring assembly or customization (off-the-shelf), usually ship within 24 hours.
Tracking information is sent to your email upon labeling. Customers accounts are also updated at the same time. All customers (with or without accounts) can check order status online which has the same details available to our staff.
Except for Priority Mail Express® (Overnight Delivery*), USPS delivery times for Priority Mail® and First-Class Mail® are estimates and are not guaranteed; however these are delivered to most states after 2-7 working days.
International orders require additional paperwork and processing time (3-4 days) prior to shipping.
Free shipping (when available); applies to US only

*with a money-back guarantee

USA/Canada: Pay with Visa, MasterCard, American Express, Discover, PayPal: PayPal, PayPal Credit, Venmo. Gift cards that display Visa, MasterCard, American Express and Discover logos are also accepted.
Customer billing information (first name, last name, billing address, and credit card information) must be entered exactly as it appears on credit card statement otherwise transaction will decline. Once order is placed a pending authorization (not a charge) will appear on your account and removed within 7-10 business days or once authorization has been charged and order shipped.
International: Select PayPal to pay with card. International credit cards are NOT accepted unless registered through PayPal. Click here to learn more about PayPal.
All prices are in U.S. dollars. The actual price charged to International customers is subject to the exchange rate applied by PayPal.

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