what a joke! i believe objective reasoning to a point, but i still have not heard about any measurements that determine instrument separation and soundstage, and without moving position of speakers or changing anything but amplifier, i have heard DRAMATIC differences by amp alone, with Pass Labs and Mcintosh having the best in this regard out of about 30+ amps i have tried... People can believe whatever they want about objective measurements, but until i hear about any measurements thtat actually determine how well instrument separation and soundstage is, i believe in both objective and subjective impressions, and it is not just bias. Even my wife who never does critical listening, she immediately stated that when i introduced either of the 2 amps mentioned that she could hear a dramatic difference...and the other amps were not sleepers or junk or malfunctioning...some amps are clearly designed better....DACS i have heard some differences but not nearly as daramatic as when i go to one of the mentioned amps.