When sending a signal from my PA mixer to my on-stage monitoring device (in my case a Bose L1 Compact), I use the L+R Main Out jacks from my Mackie mixer. In order to get both L+R signals to my Bose, this cable comes in handy. I have always been suspicious of female jacks (they don't seem to last very long), but this cable, including its female jack, is very well built and will probably last forever.