The factory reset for the AMP1 works as follows: switch off the AMP1, hold down all three footswitches, and then switch the amp back on again. Then release the three footswitches. If the AMP1 has now switched to the Clean Channel, and BOOST and REVERB (AMP1 Silver and Mercury Edition) or just REVERB (on the AMP1 Iridium Edition) are activated, the reset has been successfully performed.

The factory default settings for the three footswitches in preset mode are: