In the course of work on a thread about talents of various headhones to play metal (http://www.head-fi.org/t/715478/headphones-for-metal-music-ultimate-solution) I consider "Detail level" and "Speed" among key criterias for cans / metal subgenre gestalt response. I tried to combine formal definitions with subjective feeling of cans detail and speed performance and to write down results in a spreadsheet below. Results are relevant for headphones level (top level headphones low speed isn't equal to basic level low speed).
Any ideas? Does such a classification make sense? It is useful? Intuitive? Or does it mislead? Or may be someone already made something like this a long time ago?
Detailed - Easy to hear tiny details in the music; articulate. Adequate high frequency response, sharp transient response.
Fast - Good reproduction of rapid transients which increase the sense of realism and "snap".
Speed - A fast system with good pace gives the impression of being right on the money in its timing.
detail The subtlest, most delicate parts of the original sound, which are usually the first things lost by imperfect components. See "low-level detail." Compare "haze," "smearing," "veiling."
fast Giving an impression of extremely rapid reaction time, which allows a reproducing system to "keep up with" the signal fed to it. (A "fast woofer" would seem to be an oxymoron, but this usage refers to a woofer tuning that does not boom, make the music sound "slow," obscure musical phrasing, or lead to "one-note bass.") Similar to "taut," but referring to the entire audio-frequency range instead of just the bass.
speed The apparent rapidity with which a reproducing system responds to steep wavefronts and overall musical pace. See "fast," "slow."