Rockford Fosgate T1000-4ad Power 1,000 Watt Class-ad Full-Range 4-Channel Amplifier DTM (Dynamic Thermal Management) On-board PEQ (Punch Equalization) - 18dB at 45Hz and/or 12dB at 2kHz 24dB variable crossover 250x4 @ 4 ohms 500x2 @ 2 ohms