Radial SGI Studio Guitar Interface - The Ultimate Tone Extender
Supercharge Your Guitar Setup
Take your guitar tone to new heights with the Radial SGI Studio Guitar Interface! This high-performance line driver system is a game-changer for guitarists seeking to expand their sonic horizons.
Key Features
• Drive signals up to 100 meters (300ft) without noise
• Retain the original tone of your instrument
• Ideal for studio recording and live performances
How It Works
The SGI consists of two boxes: the SGI-TX transmitter and the SGI-RX receiver. Simply plug your guitar into the SGI-TX input and connect your amp from the SGI-RX output. The SGI takes care of all the balancing, buffering, and impedance matching for you, ensuring a seamless signal transfer.
Studio Use
In the studio, the SGI allows you to sit in the control room and play guitar while hearing the exact sound coming through the monitors. Connect the guitar to the SGI-TX, run a balanced cable to the SGI-RX, and let the magic happen!
Stage Use
On stage, the SGI is a lifesaver for large stages where high impedance guitar signals are often affected by long cables or noise. It balances the signal and delivers it without any noise or artefacts, making it perfect for isolation cabinets, under stage amps, or remote 'quiet' rooms.
Complex Routing
The SGI is also a great tool for managing complex setups on stage. Route the signal from the wireless receiver to the pedalboard, then use a second unit to drive the signal back to the guitar amp and extend the reach as far as you need without any noise.
Technical Specifications
• Audio circuit type: Active 100% discrete class-A with transformer isolation
• Frequency response: 20Hz ~ 18kHz (-2dB)
• Dynamic range: 112dB
• Total harmonic distortion: 0.005% @ 1k
• Intermodulation Distortion: 0.04% @ 1k
• Input Impedance: Variable from 10k Ohms ~ 1 megaOhm
• Output Impedance: 4.5k Ohms (o' unbalanced)
• Noise: -102dBu
• Maximum Input: +10dBu
• Ground lift, Drag Control
• Input Connectors: TX: 1/4' | RX: XLR
• Output Connectors: TX: XLR | RX: 1/4'
• Construction: 14-gauge steel chassis & outer shell
• Size (L x W x D): 2.75' x 4.25' x 1.75' (70 x 108 x 44mm)
• Weight: 3lbs. (1.36kg)
• Shipping size (L x W x D): 5' x 2.75' x 10.75' (127 x 70 x 273mm)
• Shipping weight: 3.2lbs (1.45kg)
• Power: +15VDC/400mA adapter included
• Conditions: For use in dry locations only between 5 C and 40 C
• Warranty: Radial 3-year, transferable





The Radial SGI Studio Guitar Interface is designed for guitarists who want to enhance their playing experience. Whether you're in the studio or on stage, this interface allows you to send guitar signals over long distances without signal loss or noise. It's perfect for connecting to a distant guitar amp in the studio or managing guitar signals on stage. The SGI consists of two boxes: the SGI-TX transmitter and the SGI-RX receiver, and the connection between them is made using a standard balanced XLR microphone cable. Technical specifications include a 14-gauge steel chassis & outer shell, size of 2.75' x 4.25' x 1.75' (70 x 108 x 44mm), and weight of 3lbs. (1.36kg). It comes with a +15VDC/400mA adapter and is for use in dry locations only between 5 C and 40 C. The warranty is Radial 3-year, transferable.