Modified guitar wiring scheme for a Les Paul. This wiring scheme is a recent evolution from the famous Jimmy-Page-wiring using four push-pull-pots to allow 21 different pick-up combinations. The Twenty-Dual adds one more, including a parallel-wiring for the bridge-pickup (dual-sound), as well as a number of other useful features such as a bypass for the serial combinations and a tone-control (NT) that can be used as a treble booster in a so-called broadbucker-configuration.