#denonpma770

Hi all! first time poster here. I purchased a pair of KEF LS 50 Meta speakers and I have 3 amp choices. I may end up buying one if none of these are suitable. Yamaha A-S301 - 30 watts per channel Denon AVR2112C1 90 watts per channel A 1982 Denon PMA-770 Integrated Amp (reconditioned) - 100...