Alpine Powered System Upgrade for select 2014-up Toyota Tundra without JBL premium sound

The top two complaints about the way a car's factory system sounds are that there's not enough volume and there's not enough bass. Alpine's PSU-300TND Powered System Upgrade solves both of these issues in your Toyota Tundra with a neat and clever combination of products designed to bring joy to all music lovers. The package includes a compact 4-channel amplifier and a powered subwoofer, both mounted in a Toyota-specific bracket which mounts under the front passenger seat and wires up using Toyota-specific harnesses. The PSU-300TND upgrade is compatible with the factory non-JBL Toyota radio and almost all other aftermarket receivers. Alpine says you should be able to install this upgrade in your car in two hours or less. Alpine's KTP-445U Power Pack amplifier increases your radio's power output to 45 watts RMS by 4 channels, considerably more than what's put out by the Toyota radio. A universal plug lets you feed a signal via RCA outputs or speaker-level wiring. A built-in high-pass filter optimizes the sou...