well before my denon avr4802 i had a denon avr4800 and a poa5200 pumping my mains (m80Ti's) and it was just awesom.... what i dopn't understand why you want 4 poa-5200 they are 2 channel amps...perhaps you want to create a new sound field "8.1" let me know how it turns out

7.1.4 * MRX1120 * M100s * 180HP * 4x M3-on walls * 4x M3-IC * dual XV15se * Shakers