Here's the irony of that photo: The only humans truly able to hear what that system can produce are under 20 years old! And they probably can't afford it unless they own an Internet startup.

That said, the best, most sought-after recording engineers are those in their 40s, 50s, and 60s. They can only hear up to around 13,000 Hz, but they understand sonic depth, balance, mixing, and music. I learned a tip from the pros a few years ago: mix your music on a pair of small desktop speakers, and test it with iPhone EarPods and a factory-installed car CD player. That's what 98% of your audience will play it through, anyway.

I did sound reinforcement for my college union and radio production for the college station and two commercial stations. I can't hear as well at 62, but with what I know now, I can mix a lot better!