Radial SGI (Set) Studio Guitar Interface, TX & RX

RadialSKU: RAD-R800160000

Sale priceR 8,335.00

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The SGI is a high performance line driver system for guitars that takes an unbalanced instrument signal and allows you to drive it as far as 100 meters (300ft) without noise.

Take your tone further

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 does all of the balancing, buffering and impedance matching for you.


Features at a Glance:

  • Balanced line driver for guitar and bass
  • Send signal up to 100 meters (300ft) without loss
  • 100% discrete class-A circuit with Drag control
  • Delivers natural tone to off-stage amplifiers



Audio circuit type

Active 100% discrete class-A with transformer isolation

Frequency response

20Hz ~ 18kHz (-2dB)

Dynamic range


Total harmonic distortion

0.005% @ 1k

Intermodulation Distortion

0.04% @ 1k

Input Impedance

Variable from 10k Ohms ~ 1 megaOhm

Output Impedance

4.5k Ohms (¼" unbalanced)

Noise Floor


Maximum Input



Ground lift, Drag Control
Input Connectors: TX: 1/4" | RX: XLR
Output Connectors: TX: XLR | RX: 1/4"


14-gauge steel chassis & outer shell

Size (L x W x D)

70 x 108 x 44mm




+15VDC/400mA adapter included


For use in dry locations only between 5°C and 40°C


720 g


Passive, no power require


For use in dry locations only between 5°C and 40°C

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