It weighs just under 9 lbs on my scales.
Unfortunately this, as do all the other basses I have ever known, does occasionally produce a note that is not how the composer intended. Usually accompanied with with a smug smile from the other side of the stage. I have tried new strings, amps, straps, and the only thing that seems to help is if I practise, and avoid letching, I mean looking at some of the members of the audience.