PAC AP4-CH21 AmpPRO Car Stereo Advanced Amplifier Installation Audio Interface

AmpPRO simplifies the installation of upgraded amplifiers in data-bus-controlled amplified sound systems. With AmpPRO, you can improve audio performance while keeping an original radio’s fit, finish, and features.<br><br> Compatibility Note: This product is compatible with data-bus-controlled amplified systems only. 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: Alpine, Beats, or Harman Kardon. Vehicle manufacturers do not always brand compatible systems. Unbranded amplified systems are generally identified by locating a center channel speaker or subwoofer.<br><br> Benefits:<br> • Simplifies amplifier installation<br> • Prevents the need for summing and DSP devices<br> • Provides factory sound system upgrade solution<br><br> Features:<br> • It can be used to upgrade the entire sound system or just part of it thanks to the retention of the original amplifier<br> • Enables the addition of a subwoofer system to the original sound system<br> • Variable volume, fade, balance, bass, mid and treble audio settings<br> • Front, rear, sub preamp outputs (5 volt RMS)<br> • Provides flat audio output for a solid audio foundation<br> • Customized OE bass, mid and treble center frequency selection<br> • Retains uConnect, Bluetooth audio, and all warning chimes<br> • Plug &amp; play installation<br> • Sublevel controller<br> • Optional TOSLINK optical output (APA-TOS1 sold separately)<br><br> Includes: <br> • AmpPRO module<br> • 22-pin harness (MS-CAN)<br> • Bass knob<br> • Knob harness<br> • Manual<br>