..... if your playing out, you almost really need 2. Just in case.
I always bring a backup,if for nothing else, just as a backup.
I only broke a string once in ten yrs of playing out.That one time, I did not have a backup.
Its a maaaajor inconvenience to stop the show to change a string....or not stop -and have the band continue on...bassless until you get it fixed.
I say 2 bass min, even if its just a crappy $5 beater sears & roebuck bass or whatever...the show must go on.
If you aren't playing out,..or just a basement party or whathaveyou...then..do as you will.


YMMV
