1. Master Volume (Push-Pull Potentiometer to switch between Active Mode and Passive Mode)
2. Pickup Balance
3. Tone Blend (only available in the passive mode)
4. Dual Potentiometer for High Cut and Boost (on Top) and for Mid Cut and Boost (Ring)
   (only available in active mode)
5. Dual Potentiometer for Bass Cut and Boost (on Top) and Mid Frequency (Ring)
   (only available in active mode)
6. Coil Switch for each MASTER BAR Pickup Up = Humbucker / Down = "Humbucking" Single Coil
7. Output Jack with integrated Power Switch

The MASTER ELECTRONICS is powered by 18 V (two 9V batteries).