PAC AP4GM71

Amplifier Integration Interface for Select 2019 General Motors Vehicles Models with BOSE Ethernet Audio AmpPRO simplifies the installation of upgraded amplifiers in select amplified sound systems. With AmpPRO, you can improve the audio performance while keeping the original radios fit, finish and features. Variable volume, fade, balance, bass, mid and treble audio settings Front, rear, sub preamp outputs (5 volt RMS) Customized OE bass, mid and treble center frequency selection Retains warnin...