sentences:  This knob has several different functions, such as acting as a tone blender between pickups and as a general EQ between the bass and treble tones of the guitar.Its primary function, however, is to serve as a bass pickup volume equalizer, allowing for the generally louder neck pickup to be reduced to comparable levels of volume with the bridge pickup.The knob is a potentiometer wired in as a variable resistor between the neck pickup and the neck pickup's volume knob .