Yes, you can with the Gen 2 Turtlebox! Simply plug your source in with an aux cord to one Turtlebox. Then power on both Turtleboxes and push the 2 Bluetooth button on both Turtleboxes. You will hear a sound indication when they stereo pair via Bluetooth and both of the 2 Bluetooth buttons will show solid illumination. This comes in handy, especially for outdoor movie projectors.