THUNDER Series 400-Watt RMS 4-Channel Class AB Amplifier | MTX - Serious About Sound®
Precision Power SPL15001 SPL Audio Monoblock Amplifier - 750W RMS
Amazon.com: Taramps Bass 400 amplifier 400 watts RMS 1 Channel 2 Ohms Monoblock Class D, great for Sub and Bass, Bass Boost, Crossover High/Low Pass, Power technology, Small Amp, White : Everything Else