Radial's SGI Studio Guitar Interface consists of a transmit (SGI-TX) and receive (SGI-RX) pair of modules that allows a guitar signal to travel across 300 feet of balanced cable to a distant amplifier without noise or distortion. This makes it easy to send guitar and bass signals across large stages or feed amplifiers off-stage, all without the interference and signal loss that results from using long ¼" instrument cables. The SGI is also a helpful studio tool, providing a robust solution for feeding guitar signals from the live room or control room to a distant isolation booth. The latest version of the SGI now comes equipped with premium Jensen transformers in both the TX and the RX units, providing improved audio performance across a wider bandwidth, so the tone and nuance of every audio signal is preserved right through to the amplifier. The SGI has also been updated to make it more pedalboard-friendly, with the ability to be powered by standard pedalboard power supplies in addition to the 15V power supply that ships with the SGIs.