Poly-Planar ME-60BT 4-Channel 120W Audio Amplifier w/Bluetooth [ME60BT]
Pioneer Weatherproof Compact Monoblock Marine Amplifier - 300W [GM-ME300X1C]
Polk Audio PA D4000.4 PAD Series 4-Channel Amplifier - 400W [PAD4000.4]
Poly-Planar ME-6005D 5-Channel Amplifier - 600 Watts [ME6005D]