headphone.com have setup a great little utility that allows you to compare key features of up to four different brand/models of headphone at once and show the results on a graph for easy evaluation.
Comparable features to display include:
- Frequency Response
- Harmonic Distortion of a 500Hz Sine Wave Input
- Impedance Versus Frequency
- Isolation Response with Pink Noise Input to Monitor
- Square Wave Response 500Hz
- Square Wave Response 50Hz
Obviously not every brand and model ever created are in the database but its a great way to compare many of the most popular types.
Go check it out here !