A system and a kit can be used for onboard, real-time blending for electronic pickups to produce various tonal combinations. In one example, at least one of the electronic pickups has dual coils. The dual coil pickup can be electrically connected to a switching circuit positioned on a stringed instrument. The switching circuit can be adjustable in real-time to select between at least two conditions for a signal of the dual coil pickup. In one instance, the conditions can select north coil only, series wiring of the dual coils, or south coil only. Alternatively, the conditions can select series wiring or parallel wiring of the dual coils. Each of the electronic pickups is electrically connected to a taper circuit positioned on the instrument. Each taper circuit is adjustable in real-time to vary an amplitude of the signal from the respective electronic pickup for output of the instrument.