Pricing and availability
We compare 600+ stores and found this item at 10 stores. Prices updated .
Store
Reviews
Price
Average Price: $284
Standard/Professional
$119
$300+
Price Tier
Budget
Standard
High-end
Price History
Based on price data from 7 merchants for "Radial Engineering SGI TX/RX Studio Guitar Interface". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.
Description
When it comes to bridging the gap between your guitar and amplifier over long distances, the Radial Engineering SGI TX/RX Studio Guitar Interface stands as a reliable solution. Designed for both studio and stage environments, this ingenious 'send & receive' system lets you run your guitar signal up to 300 feet away without any loss of quality. The SGI system consists of two robust modules: the SGI TX transmitter and the SGI RX receiver, connected via standard XLR cables.
The SGI TX is equipped with 100% discreet Class A active circuitry, mirroring the high-fidelity design of Radial's renowned JD7 Injector. This ensures your guitar's natural tone remains unharmed by eliminating zero-cross distortion, while the unique Drag Control load correction circuit reintroduces the authentic interaction between guitar and amp. This is perfect for guitarists who double as engineers, allowing them to stay in the control room and listen to their sound in real-time over studio monitors.
The receiver, SGI RX, is passive and doesn't require power, further eliminating hassles during setup. With transformer isolation in both modules, buzz and hum from ground loops are effectively eliminated. Encased in a 14-gauge steel chassis with Radial’s I-Beam construction, the SGI is built to withstand the rigors of live performances and studio sessions alike, ensuring years of dependable use.
Key Features:
- Drive a guitar signal up to 300 feet without loss
- 100% discreet Class A electronics for superior sound quality
- Drag Control pickup load correction for natural tone preservation
- Transformer isolated to eliminate noise
- Utilizes standard balanced XLR cables
- SGI-TX: 1/4" hi-Z input with Drag control; Balanced XLR-M output
- SGI-RX: Balanced XLR-F input; 1/4" hi-Z output
- Ground lift option on SGI-RX to eliminate hum
- Includes 15VDC power supply for SGI-TX module
- Sturdy 14-gauge steel construction with protective design
Product specs
| Available since | September 2006 |
| Multi-Channel Unit | No |
| Channels | 1 |
| Active / Passive | Active |
| 19" | No |
| Pad switchable | No |
| Gnd/Lift switchable | Yes |
| Powered by battery | No |
| Speaker Simulation | Yes |
FAQs
-
What is the primary function of the Radial Engineering SGI TX/RX Studio Guitar Interface?
-
The Radial Engineering SGI TX/RX Studio Guitar Interface is designed to send guitar signals over long distances without signal loss, making it ideal for studio environments where the guitar player is far from the amplifier.
-
Does the Radial SGI require external power?
-
Yes, the Radial SGI is an active device and requires an external power source to operate effectively, ensuring optimal signal integrity over long cable runs.
-
Can the Radial Engineering SGI TX/RX be used with bass guitars?
-
Yes, the Radial Engineering SGI TX/RX can be used with bass guitars, providing clear and accurate signal transmission over extended cable lengths.
-
Is the Radial SGI suitable for live performances?
-
While primarily designed for studio use, the Radial SGI can also be used in live settings to maintain signal quality over long distances between the stage and the mixing console.
-
Does the Radial Engineering SGI have a ground lift switch?
-
Yes, the Radial Engineering SGI features a ground lift switch to help eliminate hum and buzz caused by ground loops in your signal chain.
Videos
Full Compass
Radial Engineering SGI Studio Guitar Interface System Overview | Full Compass
Reviews
Critic Reviews
5.0 out of 5
Based on 1 Review and 2 Ratings
Artist usage
Add artistIn the Vintage Guitar Magazine article in September 2010, Steve states that he uses a Radial SGI Single Line when playing live: " Everything’s plugged into a Voodoo Power supply and there’s a Radial SGI single-line transformer."
In an Instagram post by thejamesduke, James Duke is shown using the Radial Engineering SGI TX/RX Studio Guitar Interface.
At 12:08 Milky Chance's tech explains the functionlity of the SGI on Clemens's board.
Flansburgh’s footpedal gear includes the Radial SGI TX and SGI RX, Boss Noise Suppressor NS-2, Electro-Harmonix micro POG, MXR micro flanger and Semaphore tremolo.
At 22.06 minute mark, 2 Radial SGI TX interfaces can be seen below Radial ProD2 boxes.
In the "My Morning Jacket Rig Rundown" by Premier Guitar, hosted by John Bohlinger, it is documented that Carl Broemel utilizes two Radial Engineering SGI TX/RX Studio Guitar Interfaces as part of his setup.
In this photo, which comes from Half Alive's show source, Taylor's pedalboard can be seen. One of the items Taylor uses is the Radial SGI TX/RX interface.
"Both bass and cello are run from the back of the rig via Radial SGIs down to the pedalboards from the Shure ULX wireless units in the rack" - Mix Online.
On Radial's website, Black is mentioned as user of this interface. He says : "I've found the Radial ProRMP Reamper useful many times in taking a second approach to my tone on a record. It also helps in live situations when applied with the SGI. The distance from my wireless rig to the pedal board and then to the amp is considerable. It helps keep my signal strong, clean and with great tone quality!"
According to John Bohlinger in the "My Morning Jacket Rig Rundown" by Premier Guitar, Tom Blankenship utilizes the Radial Engineering SGI TX/RX Studio Guitar Interface to maintain a clean signal in his setup.
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Radial Engineering SGI TX/RX Studio Guitar Interface, it is most commonly used with the following gear.
More Radial Direct Boxes
Accessories & Related Items
Community setups
Similar
Gear Guides
Most Popular Direct Boxes
Most Popular Brands
-
Added to Equipboard on by
equipboardGear IQ 4934
-