Back in the early 80's adding a humbucker pickup to a Strat took off. Since then we've added just about every conceivable combination you can think of, and they're all available factory pre-wired. The SA/SA/81 brings together the classic EMG 81 with two Alnico V loaded single coils for a combination that is aggressive in the bridge and smooth yet articulate in the middle and neck positions. Once you've decided on the system you want, it can either be fully or partially assembled depending on your guitar and the sound you want. Since all EMG's use a solderless wiring system, you can change your pickups easily at any time without any soldering.