The Dumble ® Blackface pedal takes the sound into the 80's/90's. The circuit features a carefully selected op-amp, but is voiced to give a more mid-focused, dynamic and harmonically complex sound, which also has the characteristic bloom of the note and appears to swell as the note sustains. The pedal offers low to mid gain in its normal setting and can be carefully structured using the "Dynamic" control. Increasing this control increases the gain, bite and amount of touch sensitivity. Engaging the gain switch adds more fatness and gain to the sound.