Quote Originally Posted by Simon Barden View Post
The cap value only really makes a difference when you turn the tone control down a bit. Any slight difference it will make with the tone control right up is a very small fraction of a decibel at higher frequencies, so basically inaudible. With 500k pots, if it sounds dark, then it will be down to the pickups themselves and the guitar's construction rather than the choice of tone cap.
My standard tone is playing with the tone turned towards the bass end just short of sounding muddy.