Whether it's maple or rosewood or pau ferro or ebony or ebanol or carbon fiber or a weirwood tree's face carved by the children of the forest into a fretboard.....does the material of which the fretboard is made make a difference that you can hear? "Maple is brighter and rosewood is warmer......" and such. There are certainly differences from one piece of wood to another that scientific instruments could detect, but the question is whether or not a person can hear it, or thinks they can. That's what I'm asking. We're not gonna prove anything here but I think poll results might be interesting.