I don't think a secondary bass is necessary. Unless you're can't remember the last time you checked the 9 volt in your fancy active bass.
Penalty for battery dying during a set with no backup.....$350 and you have to tongue check the brand new 9 volt that you'll probably have to bum from the clubs sound man.
Penalty for battery dying during a set with no backup.....$350 and you have to tongue check the brand new 9 volt that you'll probably have to bum from the clubs sound man.