DS18 MP.4A Full-Range 4 Channel Class D Amplifier - 4 x 40W RMS @ 4-Ohm [MP.4A]
DS18 HYDRO 4-Channel Full Range Digital Marine Amplifier [NVY-IPX7.4]
Poly-Planar ME-60 4 Channel Amplifier - 120 Watts [ME-60]
Pioneer Weatherproof Compact Monoblock Marine Amplifier - 300W [GM-ME300X1C]
Poly-Planar ME70BT IPX6 4-Channel Marine Amplifier [ME70BT]
Poly-Planar ME-6005D 5-Channel Amplifier - 600 Watts [ME6005D]