JBL GTR-1001 2600W Max (1000W RMS) GTR Series 2-Ohm Stable Monoblock Subwoofer Amplifier 700 Watts RMS x 1 @ 4 ohms 1000 Watts RMS x 1 @ 2 ohms Total Peak Power: 2600 Watts Variable low-pass filter: 32 - 320 Hz Phase Switch: 0 - 180 degree