Radial SGI-TX Guitar Interface System Transmitter

The SGI-TX is the transmitting half of a high performance line driver system for guitars that takes an unbalanced instrument signal and drives it as far as 100 meters (300ft) without noise.

Perfect for in the studio, the SGI-TX can send guitar signals across long distances without signal degradation or noise while retaining the original tone of the instrument. There, it allows the guitarist to sit in the control room and play while connected to a guitar amp isolated in another room. In a live stage performance, 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 employs a proprietary drive and balancing circuit that is made up of two modules: the SGI-TX transmit module and SGI-RX receive module (sold separately). The SGI-TX is active with 100% discreet class-A circuitry and Dragâ„¢ control load correction to ensure the most natural sound. The SGI-RX is completely passive. To eliminate hum and buzz caused by ground loops, each module is equipped with isolation transformers that are wired in opposing directions to counteract any artifact.

To purchase the full SGI studio guitar interface, look up the Radial SGI. For the receiver half only, look up 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 Dragâ„¢ control load correction circuit
  • Input Impedance: Variable from 10 kΩ – 1 MΩ
  • Maximum Input: +10 dBu
• SGI-TX Output: Balanced XLR-M output
• Noise: -102 dBu
• Ground Lift: Yes – LIFT switch on SGI-RX
• Power Supply: Included – 15VDC 400ma , center +
• Construction: 14-gauge steel chassis and outer shell, baked enamel finish
• Power: +15VDC/400mA adapter included
• Conditions: For use in dry locations only, 5-40°C
• Size (H x W x D): 1.75″ x 2.75″ x 4.25″
• Weight: 3 lbs (1.36 kg)