The DUMBBELL BOOST is a Dumble® BBC-1 Circuit in a compact simple two knob pedal.
Features a true bypass foot switch and top mounted In/Out Jacks and 9V Power Input.
The input knob controls the input impedance and can be seen as a tone control, all the way to the left it gives you a brighter less bassier sound and all the way to the right its a full range sound with rich harmonics, shall we say Dumble® like tones,
Level knob controls the output level. 
 
Hand soldered with the best through hole components for maximum tone and reliability. 
 
Spces
Power Requirements 9V 
Current Draw 50mA
Size 4.4 x 2.4 x 1.5 Inches