Radial Engineering SGI-RX 9v - Studio Guitar Interface (Receiver)

The SGI sends guitar signals across long distances without signal loss or noise, while retaining the original tone of the instrument. In the studio, it allows the guitarist to sit in the control room and connect to a distant guitar amp. On stage, the SGI can be used to play the guitar amp using off-stage isolation cabinets or it can be used to manage guitar signals to and from wireless systems, pedalboards and amplifiers.

The SGI consists of two boxes: the SGI-TX transmitter and the SGI-RX receiver. The connection between the TX and RX is made using a standard balanced XLR microphone cable. To use, you simply plug your guitar into the SGI-TX input and connect your amp from the SGI-RX output and you are set to go. The SGI TX uses a discrete buffered circuit to drive your signals over long distances, while the SGI RX captures the signal and converts it to the appropriate impedance to feed your amplifier while retaining the original tone.

The SGI system now proudly sports premium Jensen transformers inside: one in the SGI TX and one in the SGI RX. These transformers aren’t just there to help with isolation to prevent hum and buzz from ground loops – they are a key part of the circuit that converts the signal at each end of the system. Using industry-leading Jensen transformers in the SGI helps achieve a wider, flatter frequency response, lower noise and distortion, improved dynamic range and a greater signal to noise ratio. All of this helps deliver audio cleanly across long distances without any alteration to your original signal.