Give your car stereo a power boost with this four-channel JBL Apex series car amplifier. The dynamic class D power provides 450W of power per channel, while the small chassis is suitable for installation in a range of spots on boats, in cars and on other vehicles. This JBL Apex series car amplifier features a variable high and low crossover for flexible frequency and audio customization. | Jbl | | Refurbished Excellent | Apex 450W Class D Multichannel Amplifier with Selectable Hi-Pass Crossovers | Black | Best Buy