Totally agree with Al on this one, and for those that rely heavily on specs,
here's some for you,
. : ... :. . :: . .. . . .
. . :.. .. :.. . ....
..:. ... ..:.. .: .... .
. :. ... :... ..:.. ..
. ... .: .. ... .: . .
IMHO, the above will tell you just as much as a spec sheet with regard to how a component will sound assuming there is no measurement that raises a red flag.