A passive direct box/line isolator designed to transmit sound naturally without spoiling it. Frequency response (20Hz - 20kHz) that achieves a flat sound. The size is convenient to carry, and it can also be incorporated into effector boards. When the SUM switch is turned on, the through jacks are combined and output can be output from either through jack. GND LIFT can also be used to isolate the XLR's GND pin and eliminate hum noise.
