Questions about Renkforce PA Amplifier MP-8000 RMS Leis

This is all the instructions offer https://asset.conrad.com/media10/add/160267/c1/-/gl/001306999ML02/bedienungsanleitung-1306999-renkforce-mp-8000-pa-verstaerker-rms-leistung-je-kanal-an-4-ohm-320-w.pdf 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