Question about Renkforce PA Amplifier MP-8000 RMS Leis

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14. technical data
MP-8000
Operating voltage...................................... 220 - 240 V/50 - 60 Hz
Fuse.................................................... T5AL / 250 V (5 x 20 mm)
Input sensitivity........................... 0.775 V
Max. input level................................... 2.2 V
Input impedance..................................... 10 kOhm
Output power (RMS / max.) .............. 2 x 320 / 500 W (4 Ohm)
Frequency response............................................. 10 - 30000 Hz
Distortion factor..................................................... 0.05
S/N ratio..................................................... 99 dB
Dimensions............................................. 483 x 88 x 260 mm
Mass .......................................................... 8 kg