[QUOTE=melorib]The most important factor for me is correct timbre, at least what I feel is correct, particularly piano, I grew up listening to my family playing piano... Then liveliness, when I look to see if someone is in my room playing... I also like to 20hz to 20khz, meaning extended response, not exactely this numbers...[/QUOTE] Do you look for these things when you attend a live concert? Richard