This Shadow SH EQ5 is an electric guitar humbucker with built in 5-band equalizer. 7 trim-pots on top of the pickup adjust the input level, master gain and 5-band E.Q. The active E.Q. circuit can be switched on or off and can be used to E.Q. other passive pickups in the guitar. The humbucker is fully shielded and has four-conductor output for all wiring possibilities.