The SGI comes complete with ‘transmit’ and ‘receive’ modules that use common balanced XLR cable to connect your guitar to amps up to 500 feet away! Features active Class-A circuitry with Drag™ control load correction for the best audio quality and transformer isolation to eliminate hum caused by ground loops. Comes complete with 15VDC power supply. The SGI is a unity gain device that features 100% discreet Class-A circuitry and transformer isolation to eliminate ground loops. It also has a Drag Control load correction circuit, DC connection for provided 15VDC supply, and ground lift. The SGI receive module features an XLR input and ground lift. Made from heavy-duty 14-gauge steel with internal I-beam frame and protective zone around switches and connectors. With the SGI, the guitarist can now play the roles of performer, engineer, and producer while saving immeasurable time during the recording process.