75 dB of pink noise is pretty annoying so I think your reaction is pretty normal.
Now if you'd really like to be blown away, set the volume to the reference level you used when the calibration was done but play a modern remastered *loud* CD like say The Who. The average level on the CD will be 15-20 dB louder than the test tones (-10 dB vs -30 dB) and
that will be tough to take - at least I can't stand it for more than a few minutes.