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 188.8.131.52 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.
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» 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.
The factory amplifier MUST remain connected to the vehicles wiring. Vehicles without factory amp are not compatible.