Jim Dunlop GCB80 High Gain Volume Pedal
This gold standard of volume controllers is great for pedal steel swells and instant dynamics. Quiet operation and heavy-duty construction combine with an ultra-sensitive 1 million cycle taper potentiometer for the most delicate control ever. Power: Passive in-line circuit requires no additional power. 10" x 4" x 2-1/2" 3.5 lbs. Black