From a casual observation tube equipment measures poorly compared to solid state. However, many people say tubes sound better. How is this possible? From personal experience, I have noticed some poorly measuring tube amps will raise the hairs on the back of my neck while listening to Sade. It is as if she were breathing on my neck and ears. However, I have also noticed I do not get this same physical reaction with some very well-measuring solid-state amplifiers. The scientific part of me says this is bullshit but my physical response is undeniable. How can I get these two sides of my brain to agree? I want to believe if it can't be measured it does not exist yet the goosebumps on my neck do not lie. Has anyone else had this experience?