IN AND OUT JACKS Either of the two input and output connectors, XLR or 1⁄4” TRS jack (Tip = Pin 2, Ring = Pin 3) can be used for connection to line level signals. The two input jacks are connected in parallel with each other, as are the two output jacks. Use only one connector on each side at a time. GROUND LIFT SWITCH This switch disconnects the ground between the input connectors and the output connectors when set to the LFT position. The ground is connected through when the switch is in the GND position.