The One Control Minimal Series Pedal Board Junction Box with BJF Buffer is a tool designed to save you time in various situations, such as on stage or in the studio. This small box, with two inputs and two outputs, has a very simple function but produces a tremendous effect. Includes instruction manual. ・How to Use BUFFER/PASSIVE switch: Switches the buffer ON/OFF. In PASSIVE mode, the buffer is OFF. Use in PASSIVE mode when not connecting power. POLARITY/REVERSE switch: Reverses the phase between the BUFFER IN/BUFFER OUT terminals. This switch only works when the BUFFER/PASSIVE switch is on the BUFFER side. 9V IN: Connect the power adapter. Uses a standard center-negative DC9V terminal. Always connect power when using the buffer. The center LED lights up when power is properly connected. ※ When Buffer is OFF, you can connect to either A or B terminals from either direction. When Buffer is ON, always connect to the A side terminals, with the signal entering from BUFFER IN and exiting from BUFFER OUT. 94D x 38W x 32H mm (excluding protrusions) 94D x 46W x 40H mm (including protrusions) Input Impedance: 500kΩ (Buffer ON) Output Impedance: 60Ω (Buffer ON) Weight: 220g Current Consumption: 3mA Power: Center-negative DC9V adapter ※ Batteries cannot be used.