"It tests good" Three words wasted on a true lover of Music.
If I like the sound, that is the only test that matters.
If there is a subjective measurement based on "satisfaction" the parameters of that test would include all factors, none more important than the listener's stress-level and mood. The experiences of that day impact perception, as do 'set and setting'.
Parametric testing of human behaviors has always proved difficult because we are Homo Sapien Sapien, whose distinguishing difference from our closest Ape cousins is discernment.
Now I would enjoy the video of two Grey Back Gorillas, after having figured out that headphones are not a delicious treat, to see them listening to some Schiit...