If you have two ROLL speakers (or a ROLL and a BOOM or MEGABOOM), you can use them together to amplify your sound. Here’s how:
Connect your first ROLL to your device.
Open the ROLL app and tap the “Double Up” icon then tap Start in the Double Up screen.
Turn on your second ROLL.
Tap Start in the ROLL app.
Press the Bluetooth connect button on your second ROLL twice (quickly).
The two ROLL speakers will now be connected to your device.
NOTE: You can also use the app to “lock” the Double Up connection so when you power both of your ROLL speakers up, they’ll automatically reconnect in Double Up.