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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
-29%
AP4-CH21 Add-an aftermarket Amp interface for Chrysler, Jeep, Dodge with factory amp
Not rated yet
  • Net weight
    0.89 lbs
  • Part Number
    AP4-CH21

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 1.1.1.12 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 returns policy differs from than of other online merchants so we encourage everyone to read the returns policy page it in its entirety prior to ordering.
Defective returns 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 reasons).
After 10 days of receipt, customer covers return shipping cost, however we cover shipping cost to supplier/manufacturer, and also the cost to ship 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 as much product description, exceptions, requirements, pictures and application possible. Click to read the full return policy page.


Gone are the days when customer needed to call or email to obtain shipping rates. At Discount Car Stereo.com, shipping rates are automated and calculated in real time and dependent on cart contents, weight and destination.
To determine applicable shipping for items in cart:
- Proceed to checkout.
- If already signed in; select address from address book or if new or wish to remain anonymous; enter shipping address.
- Select from available shipping methods
Online shipping calculator provides real time rates and shipping methods.
We ship throughout the USA, Canada and select international destinations (Click country drop-down in checkout page for current listing or visit our Frequently asked questions page).
We are a family owned and operated specialty car stereo and accessory store and as such every effort is made to get your order processed and shipped at soon as possible; but because 95% of our offerings are made to order (not sitting on shelf collecting dust). Additional time (usually 2-4 working days) is required after which time orders are shipped using shipping method selected at checkout. Products requiring assembly includes this graphic in addition to warning messages at the bottom of product description page.
Paying for a faster delivery method (e.g. Express mail, Priority mail etc.) for products requiring "assembly" does NOT speed up assembly (built by hand) time; however, it does speed up delivery time after shipment.
Delivery time for in stock products requiring assembly= Assembly time (2-4 working days) + transit time (shipping method).

Por ejemplo: Order our very popular AUX-GM3x GM aux cable and select "USPS Priority Mail (2-4 days) nationwide; expect delivery between 5-7 business days after order placement.
Please contact us first regarding time sensitive deliveries.
Items not requiring assembly or customization (off-the-shelf), usually ship within 24-hours and includes this graphic.
Tracking information is emailed upon labeling. Customers accounts are also updated at the same time. All customers (with or without accounts) are able to check order status online which displays the same details available to our staff.
Except for Priority Mail Express® (Overnight Delivery*), USPS delivery times for Priority Mail® and USPS Ground Advantage™ are estimates and are not guaranteed; however ship time to most states is between 2-7 working days.
International orders require additional paperwork and processing time (6-10 days) prior to shipping and due to many factors (custom inspections, carrier changeovers etc. ) we care not able to determine delivery times .
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, 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 after being 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.
Important notice regarding shipping to alternate (non-billing) addresses: Shipping to non-billing address is no longer allowed, unless proof of card ownership is provided. Any and all customers shipping to non-billing address will be contacted by email to provide additional proof.

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