Straight from Gibson Guitar's Historic Re-issue guitars come Gibson Gear's new Historic Spec series - parts that have been specially designed to replicate the original parts used by Gibson in the late 1950s. This Historic Potentiometer has been designed to be vintage-accurate, specifically in terms of its dramatic audio taper. With a dynamic sweep from 1 to 10, you'll notice a difference on every single level. For anyone who's ever said, They don't make 'em like they used to, here's some proof to the contrary.