millercarbon you really nailed this comment well.
“What happened was we stopped listening and started measuring“
I have never heard of anyone who chose an amp by measuring it rather than listening to it. Have you guys? I think the testing gear would be extremely expensive and require a lot of education to properly operate.
I think amp designers and manufacturers should measure the equipment they build. I would not buy one that had been built without any measurements. How it sounds is what counts in the end, but it helps to get where you want to go if you have some idea of what's causing the sound you hear.
I'm sure that Luxman, Rogue and Sugden products are measured extensively before they are put into production.