What sound system is in the GMC Terrain?
Available with a premium Bose system, complete with 7 high-performance speakers.
Does adding a subwoofer improve sound quality?
A great subwoofer helps take away the heavy lifting from your loudspeakers, improving your overall system. The dynamics are more compelling, the soundstage widens, and the stereo imaging becomes more accurate.
How do I add an amp to my factory amp?
Another popular way to connect an amplifier to a factory radio is to use something called a line output converter. It connects to the factory radio’s speaker wires and converts the speaker-level signal to a preamp-level signal. This lets you use RCA cables to run that signal to your amplifier.