Enjoy rich sound with this four-channel MB Quart RA1-280.4 Reference Series car audio amplifier. The 280W output delivers enhanced sound quality, while the low-noise preamplifier circuit minimizes distortion. Featuring variable electronic crossovers, this MB Quart RA1-280.4 Reference Series car audio amplifier offers complete sound control, and the aluminum heat sink boosts cooling. | Mb Quart | | Reference 280W Class D 4-Channel Amplifier | Black | Best Buy