That article would have been much more helpful if he actually provided a set of tips on what to listen for. Yes, he provided some information on how bass notes are produced and knowing the different parts of a bass note might help determine if your system is capable of distinguishing those parts and would therefore be called a "good system", but other than that info the article was extremely light on what to actually listen for.
He also said determining "the same pair of colored glasses" of our hearing is of no value at all, but viewing the world through rose colored glasses means being optimistic and I've read multiple times that there is far less damage to our hearing done by listening to loud music if we actually like the music we are hearing. Something about the stress associated with not liking what we are hearing combined with the volume that actually causes hearing loss. So crank it up if you like it.
