My system is as follows: Gyrodeck with Orbe platter origin live illustrious arm, Lyra Delos cartridge Pre is Cyrus 7 with Cyrus psu. Power is 4 Cyrus mono x bi amping Gershman Avant Ggarde floor standers, these are a Canadian 3 way. I am thinking of getting B&W 801 Nautilus second hand but, I am wondering if my four cyrus mono blocks would have enough power to drive them. (I have heard they need serious power) My Gershman speakers have performed well over the years but I have moved into a converted chapel and need bigger speakers to fill the space. Any thoughts on my considered change from your more informed forum members would be much appreciated.