While Dumble amp tones vary widely from unit to unit, the Full-Drive 2 V2 can emulate the smooth, clear, and moderately compressed tones that these amps are famous for. I’d recommend using the “Wide” setting and set the pedal to Fulltone’s recommended “Pristine Rhythm/Blues setting shown below. (My pedal does not show the second 3-toggle control. This should be set to “Wide”)