Amazon.com: Orion XTR Series XTR2500.2 High Power Class A/B 2-Channel Amplifier - 2500W RMS, 2/4 Ohm Stable, High/Low Pass Crossover, Bass Boost Control, MOSFET Power Supply, Bass Knob Included, Made in Korea :
Precision Power 2500W Max 4 Channel Amplifier - Walmart.com