How do I access the random or repeat functions while in USB mode? Aquatic AV July 16, 2020 20:00 Updated Press and hold down the BAND button to toggle RDM (random). Press and hold down the DIM button to toggle RPT (repeat). Related articles Does your GP1 Gauge Stereo have a built-in amplifier? How can I save my DSP setting ? How do I change the time on the clock or turn the clock ON/OFF? Comments 0 comments Article is closed for comments.