Very interesting. I can hear all the tones, but 16 kHz sounds (to me) like a significantly lower volume than the others. When I got to that one I thought "Uh oh, my hearing has gone down the toilet", but then I could hear 17 and 18 just fine.

Age 44, listening on Beyerdynamic HD-990 headphones.

Axiom M80s + QS8s + VP180 <-- Pioneer VSX-1120-K <-- Squeezebox Touch / XBox360 / Oppo BDP-93