yes, in the same room, avr550 for 2 years, mrx720 for 6 month, 4300H for 1.5 years, nad t778 for 3 month, I have sold mrx720.
Thanks for your advice, I have used audyssey for many years, I also have audyssey multEQ app, and set them like dirac's default target curve,I tried many things to make...