Hi there, though i have Shure E2 and Sennheiser HD25,
i always felt a potential in those standard Apple earphones.
So after I finally found its frequency response graph, and according
to the information on http://www.headphone.com
a wonderful EQ-preset.
Download the preset here: http://rapidshare.com/files/21915018/iPodAccurate.cfg.html
Or create it yourself:
Enable EQ: Yes
Precut: -6.0 dB
Advanced EQ Settings:
Low Shelf Filter -> Cutoff Frequency: 90 Hertz
Low Shelf Filter -> Q: 0.7 Q
Low Shelf Filter -> Gain: 6.0 dB
Peak Filter 1 -> Center Frequency: 250 Hertz
Peak Filter 1 -> Q: 0.5 Q
Peak Filter 1 -> Gain: 2.0 dB
Peak Filter 3 -> Center Frequency: 2700 Hertz
Peak Filter 3 -> Q: 0.8 Q
Peak Filter 3 -> Gain: -10.0 dB
High Shelf Filter -> Cutoff Frequency: 12000 Hertz
High Shelf Filter -> Q: 0.7 Q
High Shelf Filter -> Gain: 4.0 dB
// from headphone.com:
A natural sounding headphone should have a gentle hump in the bass (about 3 or 4 dB) between 40Hz and 500Hz. (This compensates for the fact that headphones donâ€™t give you the physical punch that the sound from a speaker has; so a slight compensation of increased bass is needed for natural sound.) Headphones also need to be rolled off in the highs to compensate for the drivers being so close to the ear; a gently sloping flat line from 1kHz to about 8-10dB down at 20kHz is about right.