Posts on headphone measurements should adhere to the following guidelines. Basic Information Required: Provide a picture of the headphone. (grab a URL from the Internet if you are lazy.) Required: Provide a picture of any special jacks or connectors. Required: Talk about overall sound balance and frequency response signature in subjective terms. Required: Cite areas where measurements meet with subjective impressions. And areas where they don't seem to. Required: Cite fitment and seal issues. Measurements Required: Frequency response. Required: CSD (0.25 rise time recommended). Recommended: Harmonic Distortion (THD or D2, D3, etc.) Optional: Other Distortions. Subjective Impressions Optional: How does it do in plankton? Optional: How does it do in bass quality? Articulation? Impact? Slam? Optional: How are the mids, warm, lush, forward? any issues with voices and piano? Optional: How are upper mids? laid back? painful? Optional: How is treble? Smooth, rough? Extended? Optional: How is timbre? Plastic? Smoothed? Optional: Attacks and incisiveness? Optional: Dynamics? Compression? Optional: Clarity? Optional: Any amps that do well?