The Mad Professor Twimble combines the Simble Overdrive and Simble Predriver pedals in one housing and offers flexible overdrive sounds. Both sections have separate footswitches and have been slightly adapted for the Twimble Overdrive.
Activating the pre-driver gives the signal the distinctive, slightly compressing boost of the Simble pre-driver. The original switch for Hot and Cool has been replaced on the Twimble by a stepless Hot/Cool controller, which boostet the signal optionally from +10db to +6db.
The overdrive section can now provide a little more clarity in the treble range using the Contour slider, while the predriver offers a little more compression. The Accent slider gives full control over pick attack and brightness. Finally, the sensitivity knob acts as a gain control and determines the incoming signal strength or compression of the input signal.
For wide and powerful sounds, both sections of the Twimble can be activated simultaneously, providing 3 different gain levels with a footswitch.