4-Channel Memphis MXA200.4S 4-Channel 4x50 Watts Peak Power at 4 Ohm $129.95 Memphis MXA300.4 300 Watts 4-Channel Marine Grade Amplifier w/ Sealed Connectors $299.95 Memphis SRX300.4 300W 4-Channel Street Reference SR Series Amplifier $239.95 Memphis MXA480.4M 480 Watts 4-Channel w/ Efficient Class D Design $499.95 Memphis MXA5.600 600 Watts 5-Channel w/ Elemental Resistant Conformal Coat Board $379.95 Memphis VIV400.4V2 400W 4-Channel VIV SixFive Series Amplifier $499.95 Memphis MXA600.4 600 Watts 4-Channel Marine Grade Amplifier w/ Compact Design $419.95 Memphis PRXA300.4 300W 4-Channel Power Reference PR Series Amplifier $369.95 Memphis VIV600.4V2 600W 4-Channel VIV SixFive Series Amplifier $749.95