Go to Top
  • Deal Alerts!
  • |
  • Request a Catalog
  • |
  • Currency ()
  • |
  • En Español Español
Call or chat with us now!
U.S. Power Requirements & Currency Exchange Rates Accept
U.S. Power / Voltage

By completing your order, you understand that the products(s) you are purchasing are U.S. models and may have power / voltage requirements different from that of your country.

Currency Exchange Rates

Prices shown in currencies other than US Dollars are estimates based on current exchange rates. We will charge your credit card in US Dollars on the day your order is shipped, and the conversion to your local currency will be done at the prevailing rate by your credit card issuer.

PSSL will not mark your parcel as a “gift”, declare a value lower than the actual price paid, or otherwise prepare false customs information.

Get Notified
Get Notified When In Stock
Receive an email the moment this item hits our warehouse.
Enter your name and email to be notified when this product is in stock and ready to ship. Place your order now to reserve your place in line. Your credit card is never charged until your order ships. No spam here, just an in-stock notification.
First Name:
Last Name:
Extended Warranty Plans
2 or 4 Years of Additional Coverage Protect your investment with an Extended Warranty Plan from Consumer Priority Service. Purchasing this protection for your product guarantees you the very best post-manufacturer warranty support. With an Extended Warranty plan, you have instant access to a skilled team of customer service and repair experts available to answer any of your product service questions or to assist you through a hassle-free claim, should the need arise. The shield means youre protected.

Radial SGI-TX Guitar Interface System Transmitter

Radial SGI-TX Guitar Interface System Transmitter
Radial SGI-TX Guitar Interface System Transmitter
Radial SGI-TX Guitar Interface System Transmitter

Radial SGI-TX Guitar Interface System Transmitter

Item #110890
(0 Reviews)
USD$139.99 Request Price Match
Finanicing Available
Financing Available
Personal or Business Click Here
Request a Price Match
Consult one of our PA Advisors
Sales Advisor
Plus Free Tech Support—
get great advice and support on your purchase from our highly trained Sales Advisors.
Call 800-268-5520

Radial SGI-TX Guitar Interface System Transmitter

Studio Guitar Interface System

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.

SGI Applications

Using the Radial SGI in the studio
The SGI is the perfect interface for studio recording. Now, you can sit in the control room and play guitar and actually hear what is coming through the monitors while you play. Simply connect the guitar into the SGI-TX, run a balanced cable to the SGI-RX and crank to your hearts content!

Using the Radial SGI on stage
The SGI delivers a ready solution for large stages where high impedance guitar signals are often affected by the capacitance long cables or noise due to lighting systems. The SGI balances the signal and delivers it without noise or artefact. Perfect for isolation cabinets, under stage amps or remote 'quiet' rooms.

A solution to complex routing systems
The SGI is a wonderful tool that can be used to help manage complex setups on stage. You can route the signal from the wireless receiver to the pedalboard, then use a second unit to drive the signal back to guitar amp and drive signals as far as you need to go without noise.


  • 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
  • Power LED
    Indicates the SGI-TX is active when power supply is connected.
  • Drag
    Load correction allows you to dial-in the proper load for your pickups.
  • Input
    1/4" jack used to connect the instrument
  • XLR Out
    Transmits balanced signal to the SGI-RX recieve module via standard XLR cable.
  • Power
    Connection for included 15VDC power supply
  • XLR Input
    Receives balanced signal from the SGI-TX module using standard XLR cable.
  • Output
    1/4" jack outputs guitar signal to the amplifier.
  • Ground Lift
    Reduces ground loop hum by disconnecting the ground path from pin-1 on the XLR jack.
  • Warranty: Radial 3-year, transferable


  • 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 (¼" unbalanced)
  • Noise: -102dBu
  • Maximum Input: +10dBu
  • Features
    • Ground lift, Drag Control
    • Input Connectors: TX: 1/4" | RX: XLR
    • Output Connectors: TX: XLR | RX: 1/4"
  • General
    • Construction: 14-gauge steel chassis & outer shell
    • Size (L x W x D): Size: 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
… [ More ]
Related Products
Product Videos
Questions & Answers
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!
Radial Engineering SGI-TX Reviews
There are no reviews for this item. Write Review
Recently Viewed Products
Sign up for exclusive Deal Alerts:
Call Us: (800) 750-7800 Email Us Get a Free Catalog
Back to Top
Call (800) 268-5520
Mon-Fri 7am-7pm, Sat 8am-5pm (pst)
Visit Our Showroom [map]
14800 Goldenwest St.
Westminster, CA 92683
Mon-Fri 10am-6:30pm
Sat 10am-3:30pm
McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
5-Star Guarantee
Deal Alerts!
Connect with us on our Social Networks:
Facebook Instagram Twitter YouTube