Bitmap Frogs said:Nice try, but the people who went through the test were.... drum roll, audiophiles.
By the way, the discussion is only about electronics. Loudspeakers do have noticeable differences.
These are the kind of setups the guys at Matrix HiFi use for their blind listening tests: http://matrixhifi.com/contenedor_ppec.htm
So in other words, pretty much all receivers sound the same and a low-tier $70 Sony would sound the same as your Yamaha?