Back in the early 80's the idea to add a humbucking pickup to a Strat caught fire. Since then we've added just about every conceivable combination you can think of, and they're all available factory pre-wired. Once you've decided on the system you want, it can either be fully or partially assembled depending on how your guitar is setup. Since all EMG's use the Quik-Connect system you can change your system at any time without any soldering.