The HSS (Humbucker-Singlecoil-Singlecoil) pickup configuration is one of the most popular pickup configurations.
In this configuration, there are three pickups on the body of the guitar: a humbucker in the bridge position and two single coils in the middle and neck positions.
The two single coil pickups offer a clean and clear sound, as well as good response in the low-mid range. The humbucker pickup, on the other hand, offers a warmer and richer sound, as well as greater resistance to feedback.
With this configuration, guitarists can choose different pickup combinations, thus having greater flexibility.