Alpine - PDX-5 Power Density Digital Amplifier,Alpine PDX-5 5-channel car amplifier 75 watts RMS x 4 + 300 watts RMS x 1 at Crutchfield,Alpine PDX-5 Car Audio Digital Power Amplifier 150W x 4ch.+600W x 1ch. Tested | eBay,ALPINE PDX-5 Amplifier 5 Channel | M Parts Worldwide LLC,Alpine PDX-V9, 5-Channel Extreme Power Density Digital Amplifier : Electronics - Amazon.com,