new amp or keep this one for this system

[atxmarine]

ma audio HK898

1200 Watt 2 Channel Amplifier

2 x 300W RMS @ 4 Ohm Stereo

2 x 400W RMS @ 2 Ohm Stereo

2 x 600W RMS @ 1 Ohm Stereo

1 x 1200W RMS @ 2 Ohm Mono

Power Output 1200 Watts RMS Mono

Power Output 2 X 600 Watts RMS Stereo

TWO ma audio 12" Competition Chrome Subwoofer

600W Rms

1200W Max

Dual 4-Ohm Voice Coils

240 Oz. Double Stacked Magnets

Tuning @ 40Hz

4 ohms impedance

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