SGI RX by Radial Engineering is the only RX receiver module of the high-performance line driver for guitars or bass, consisting of a TX transmitter unit and an RX receiver unit. The complete system can pick up an unbalanced signal and send it up to 100 meters away using a common balanced XLR cable without loss of signal quality and tone. SGI RX can also be easily installed in guitar setups.

Key Features

• RX balanced line driver receiver unit for guitar and bass


• Receives signal up to 100 meters (300ft) without loss


• Jensen transformers for optimal sound quality


• Does not alter the natural tone of instruments or amplifiers

Does not alter the instrument's tone

SGI RX receives guitar or bass signals over long distances without signal loss or noise, maintaining the instrument's original tone. In the studio, it allows the guitarist to sit in the control room and connect to a distant guitar amplifier. On stage, the SGI RX can be used to receive sound from a guitar amplifier using an off-stage isolation cabinet or to manage guitar signals to and from wireless systems, pedalboards, and amplifiers.

Front and Rear Panel Layout

1. XLR connector


2. Signal output to amplifier


3. Ground Lift switch

How it works

The complete SGI system consists of two elements: the SGI-TX transmitter and the SGI-RX receiver. The connection between TX and RX is made via a standard balanced XLR microphone cable. To use it, simply connect your guitar to the SGI-TX input and your amplifier to the SGI-RX output, and you're good to go. SGI TX uses a discrete buffered circuit to drive signals over long distances, while the SGI RX captures the signal and converts it to the appropriate impedance to feed the amplifier while maintaining the original tone.

Jensen Transformer

The SGI system is now equipped with Jensen transformers that ensure superior audio quality: one on SGI TX and the other on SGI RX. These transformers not only provide isolation to prevent hum and ground loop noise, but are also a fundamental part of the circuit that converts the signal at each end of the system. The use of industry-leading Jensen transformers in the SGI contributes to a wider and more linear frequency response, lower noise and distortion, improved dynamic range, and a higher signal-to-noise ratio. All of this helps transmit audio cleanly over long distances without altering the original signal.

Pedalboard compatible

SGI TX comes with a 15V power supply included to power the TX transmitter unit, but it can also be used with standard pedalboard power supplies, making it easier to integrate with these devices. Any 9V to 15V power supply can be used, and both positive and negative center pin polarities are accepted.

Note: This is only valid for the latest SGI model with "Jensen Equipped" on top of the unit.

SGI Applications

SGI is the perfect interface for recording in the studio. Now you can sit in the control room and play guitar, listening to the control room monitors as you play. Simply connect your guitar to the SGI-TX, run a balanced cable to the SGI-RX, and play at full volume!

Using Radial SGI on Stage

SGI offers a ready solution for large stages, where high-impedance guitar signals are often affected by the capacitance of long cables or noise from lighting systems. SGI balances the signal and delivers it without interference. Perfect for isolation cabinets, under-stage amplifiers, or quiet remote rooms.

A solution for complex routing systems

SGI can also be used to manage complex stage setups. You can route the signal from the wireless receiver to the pedalboard; then, use a second unit to return the signal to the guitar amplifier and push the signals as far as needed without introducing noise.

SGI RX Technical Specifications

• Audio circuit type: Discrete buffered signal path with transformer isolation


• Transformer: Jensen JT-11-YPMC


• Frequency response: 10Hz - 40kHz (±0.5dB)


• Dynamic range: 121.4 dB


• Total harmonic distortion: 0.0013% at -20dBV, 22Hz to 22kHz


• Intermodulation distortion: 0.01%, 60Hz/7kHz, 4:1, -20dBV


• Input impedance: Variable from 22k-422kΩ (depends on drag control)


• Output impedance: 2.2kΩ (¼” unbalanced)


• Signal-to-noise ratio: 95.7 dB


• Maximum input: +8.5dBu, 1% THD+N, unbalanced

Features

• Ground Lift


• Drag control (correction of the connected instrument's pickup response)


• Input connectors: TX: 1/4” | RX: XLR


• Output connectors: TX: XLR | RX: 1/4”

General

• Construction: 14-gauge steel chassis and outer shell


• Dimensions (W x D x H): 70 x 108 x 44 mm (2.75“x 4.25” x 1.75”)


• Weight: 1.36 kg (3 lbs)


• Power supply: +15VDC/400mA adapter included (can be powered with 9V-15V power supplies)


• Conditions: For use only in dry environments between 5°C and 40°C.