Radial Engineering SGI Active Class-A Studio Guitar Interface Extender with TX and RX Modules


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  • The Radial SGI studio guitar interface allows a guitar signal to travel 100 meters (328 feet) over a standard balanced XLR mic cable. This enables the guitarist to play through a distant amplifier while listening to the performance in the control room. On large stages, the SGI allows a guitar signal to travel from the wireless system to a pedal board and amplifier.

    • Drive a guitar signal 300 feet without loss
    • 100% discreet class-A electronics
    • Drag Control pickup load correction
    • Transformer isolated to eliminate noise
    • Routes using standard balanced XLR cable

    The SGI employs a proprietary drive and balancing circuit that is made up of two modules: the SGI-TX transmit module and SGI-RX receive module. The SGI-TX is active with 100% discreet class-A circuitry and Drag control load correction to ensure the most natural sound.

    The SGI-RX is completely passive. To eliminate hum and buzz caused by ground loops, each module is equipped with isolation transformers that are wired in opposing directions to counteract any artifact. Best of all, the SGI is plug &play easy to use and comes equipped with power supply.

    The guitar connects directly to the SGI-TX which performs level and impedance conversion and outputs a balanced signal. The output is similar to that of microphones and DI's allowing the SGI to be used with studio wiring and concert snake systems. At the far end of the balanced line sits the SGI-RX which converts the signal back to a hi-Z instrument level output that connects to pedalboards and amplifi ers.

    With the SGI, the guitarist can now play the roles of performer, engineer and producer, while saving immeasurable time during the recording process. Comes complete with 15VDC power supply for the SGI-TX module. The SGI-RX is passive and does not require power.

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