Setting up a Bluetooth connection on your Code 25 combo amp is very easy, yet some users do initially struggle with it. First, turn your Code amp on. Then press the Power and Rev buttons at the same time - this will initiate the Bluetooth pairing with your smart device. Find the device through your phone's Bluetooth setting screen and confirm the pairing. Some users report they had to go through the pairing procedure repeatedly at the beginning (this apparently happens with the iOS devices more often), but once you set up your connection properly, the pairing should be straightforward in the future.