This pedal is characterized by tight bass, aggressive mids and sweetly crisp treble. Gain range on LED clipping side goes from discreetly crunchy to searingly saturated, but this pedal has a smoother midrange than many of the type. On the silicon side the mids are practically scooped out, the extra saturation and compression taking the pedal dangerously close to all-out fuzz territory. LED clipping is so much bigger and louder than the silicon. You have to adjust the volume to compensate for every twist of the Si/LED blend knob. Stacks well with other OD pedals. Great sustain.