Play Sounds Through Only One Ear?

I’m working on a jetpack style game currently, I have thruster noises that occur when the player accelerates. The multiple thruster sound effects are all plugged into a random node, which is hooked up to the main thruster cue.

How can I get this cue to play randomly twice? Split where one is in the left ear and the other plays in the right. The hope is that there is a slight variation in the selected sound effect to be played on each side of the user’s head (where the thrusters would be).