PAC AmpPRO AP4-GM61 Aftermarket Amplifier Interface for Select 2014-Up GM Vehicles

The PAC AmpPRO AP4-GM61 is an advanced amplifier integration interface designed to simplify the installation of aftermarket amplifiers in select 2014-2019 GM vehicles equipped with a factory amplified Bose sound system and MOST50 infotainment system. This module allows you to upgrade your vehicle's audio performance while retaining all original radio features, including volume, fade, balance, OnStar, Bluetooth, navigation prompts, parking sensor chimes, and safety alerts.

The AmpPRO AP4-GM61 provides 6-channel pre-amp RCA outputs (front, rear, and subwoofer) with switchable 5-volt or 4-volt RMS output levels, eliminating the need for summing and audio correction devices. It includes a wired remote level control for the subwoofer channels and a remote turn-on lead for aftermarket amplifiers. An optical digital output (TOSLINK) is also provided for high-end digital processors and amplifiers.

Installation is plug-and-play with a vehicle-specific T-harness that connects to the factory radio. The interface is configurable via the AmpPRO PC App for Windows, allowing adjustments to minimum and chime volumes, as well as a 3-band parametric equalizer and firmware updates. The factory amplifier must remain connected and operational for the AmpPRO interface to function correctly.