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Radial Engineering
Radial Engineering SGI 9V - Studio Guitar Interface System
Perdalboard Instrument line driver.
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Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose Click and Collect as your delivery option online or, during store opening hours, call our sales team on 01483 456777 for assistance with placing your order.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that stock availability can change quickly both online and in-store, so we would always recommend placing your Click and Collect order as soon as possible to reserve your item.
SKU: R800-1700-00
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Product Description
The Radial Engineering SGI 9V Studio Guitar Interface System is a high-performance line driver that lets you run your guitar or bass signal up to 100 metres (300 ft) without noise, tone loss or added hum. Using a transmitter and receiver linked by a standard XLR mic cable, it keeps your sound natural and consistent whether you are tracking in the studio control room or running off-stage amps and pedalboards on a live show.
Equipped with premium Jensen transformers and now compatible with standard 9V pedalboard power supplies, the SGI 9V integrates easily into modern rigs while preserving every nuance of your playing. It is the ideal solution whenever you need your instrument signal to travel further than a normal guitar lead can manage, without compromising clarity, dynamics or feel.
Take Your Tone Further
The SGI 9V is designed to move your guitar signal over long distances while sounding exactly like a short, high-quality cable. In the studio it lets you sit comfortably in the control room with your guitar while your amp roars away in an isolated live room. On stage it makes it simple to feed off-stage isolation cabs, remote amp rooms or complex pedalboard and wireless setups, all while keeping your tone intact.
Simple Two-Box System
The system is made up of the SGI-TX transmitter and SGI-RX receiver. You plug your guitar into the TX, run a standard balanced XLR microphone cable up to 100 metres, then connect your amp to the RX. The TX uses a discrete buffered circuit to drive the long line, while the RX converts the signal back to the correct impedance for your amplifier. The result is a clean, strong signal at the far end with no fuss and no complicated routing.
Jensen Transformer Equipped
Both the SGI-TX and SGI-RX now feature premium Jensen transformers at the heart of their circuits. These provide galvanic isolation to help prevent hum and buzz from ground loops, while also delivering a wider, flatter frequency response, lower noise and distortion, and improved dynamic range. Your signal arrives at the amp with exceptional clarity, punch and detail, even after travelling the full 100 metres.
Pedalboard Friendly Power
The SGI 9V ships with its own 15V power supply for the transmitter, but it is also compatible with standard pedalboard power bricks. You can power the SGI-TX with any supply from 9V to 15V, and it accepts both centre-pin positive and centre-pin negative polarities, making it easy to drop into existing boards. This flexibility is available on the latest Jensen-equipped version of the SGI.
Features
- Balanced Line Driver up to 100 Metres - The SGI 9V converts your unbalanced guitar or bass signal to a balanced line, allowing runs of up to 100 metres (300 ft) over standard XLR mic cable. This lets you place amps in isolation rooms, backstage or off-stage without suffering the high-frequency roll-off and noise that long instrument cables introduce.
- Jensen Transformer Signal Path - Premium Jensen transformers in both the transmitter and receiver provide isolation and superior audio performance. They help eliminate hum and buzz from ground loops while delivering a flatter frequency response, lower distortion and a better signal-to-noise ratio, so your tone stays clean and accurate over long distances.
- Studio and Stage Versatility - Whether you are recording from the control room into a distant amp or managing complex live rigs with wireless systems, remote pedalboards and off-stage cabinets, the SGI 9V keeps your signal strong and consistent. It is equally at home in professional studios, live venues and touring racks, making it a flexible tool for any guitarist or bassist.
- 9V to 15V Pedalboard Power Compatibility - The SGI-TX can be powered from typical pedalboard power supplies between 9V and 15V, with either centre-pin positive or centre-pin negative polarity. This makes integration into existing pedalboards straightforward, reducing clutter and avoiding the need for dedicated power infrastructure for the system.
Specifications
General
- Product Type: Studio Guitar Interface System
- Configuration: SGI-TX transmitter and SGI-RX receiver
- Application: Long-distance guitar and bass signal transmission
Performance
- Maximum Cable Run: Up to 100 metres (300 ft)
- Signal Type: Converts unbalanced instrument to balanced line and back
- Transformers: Jensen transformers in SGI-TX and SGI-RX
Connections
- SGI-TX Input: Instrument input
- SGI-TX Output: Balanced XLR output to SGI-RX
- SGI-RX Input: Balanced XLR input from SGI-TX
- SGI-RX Output: Instrument-level output to amplifier
Power
- Included Power Supply: 15V (for SGI-TX)
- Compatible External Power: 9V to 15V
- Polarity: Accepts centre-pin positive or centre-pin negative
