Description

SGI TX

Instrument Line Driver Transmitter Only

The SGI-TX is the transmitting component of a high-performance line driver system designed for guitars, capable of carrying an unbalanced instrument signal up to 100 meters (300 feet) without introducing noise.

Ideal for studio use, the SGI-TX ensures guitar signals travel long distances without losing tone or clarity, allowing guitarists to play from the control room while their amp remains isolated in another space. On stage, it enables seamless integration with off-stage isolation cabinets, wireless systems, pedalboards, and amplifiers.

This system utilizes a proprietary drive and balancing circuit consisting of two modules: the SGI-TX transmitter and the SGI-RX receiver (sold separately). The SGI-TX features an active, 100% discrete class-A circuit with Drag™ control load correction for a natural sound, while the SGI-RX is completely passive. To eliminate hum and buzz from ground loops, both modules include isolation transformers wired in opposing directions for maximum noise rejection.

For the complete SGI studio guitar interface, search for the Radial SGI. If you need only the receiver module, look for the Radial SGI-RX.

Features

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

Specifications

Circuit type: Active class-A circuit - transformer isolated
Frequency response: 20 Hz to 18 kHz (-2 dB)
Dynamic Range: 112 dB
Total Harmonic Distortion: 0.005% @ 1k
Intermodulation Distortion: 0.04% @ 1 k
SGI-TX high-Z input: 1/4" jack - buffered - with Drag™ control load correction circuit

Input Impedance: Variable from 10 kΩ - 1 MΩ
Maximum Input: +10 dBu