I had original 801s for many years when they were freshly launched (1995?) and I was very happy. Both the tweeters failed after around 7 years, not in a user-induced event. I replaced and sold on at that point, replacing with ML CLX Anniversaries.
Your amp has plenty of power to drive either speaker well but looking at its output into 8 and 4 ohms, it could benefit from a stiffer power supply.