ESX VMA700.4 Marine 4-Channel Class D Digital Amplifier 700w RMS
External amplifiers that provide significantly more power can help. 4 x 115/175 Watt RMS @ 4/2 Ω. 2 x 350 Watt RMS @ 4 Ω bridged. Marine 4-Channel Class D Digital Amplifier. HPF/LPF 50 - 500 Hz (CH1/2).