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Line Driver

Line Drivers

Take a variety of input signals, both analog and digital, and provide a balanced line-level output to feed pro audio equipment.

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Radial J+4
R800 8015 00

Balanced -10dB to +4dB Signal Driver

The J+4 allows you to boost nearly any stereo signal up to a +4dB balanced line level output, which can be sent over long distances without signal loss and connected directly to pro audio equipment such as mixers or recording interfaces. Multiple input connectors are available for integration with a variety of devices, including a stacked set of ¼" jacks for DJ mixers or keyboards, RCAs for CD players and a mini 3.5mm jack for smartphones and tablets. The J+4 delivers exceptional sonic performance, and is able to provide clean gain and eliminate noise by combining the advantages of active signal buffering with transformer isolation.

Specifications

Audio circuit type Active -10dB to +4dB line converter, transformer isolated
Number of channels 2 channels
Frequency response 20Hz - 20kHz (±2dB)
Dynamic range 102dB
Total harmonic dirstortion 0.004% @ 1kHz / +10dBu output
Phase deviation 4° @ 20Hz; 0.,5° @ 100Hz
Input impedance 10k Ohms, unbalanced
Output impedance 1.6k Ohms, balanced
Maximum input +17dBu @ 1kHz
Maximum output +15dBu @ 1kHz
Power 15VDC/400mA adapter (included)

(For full specifications see manufacturers product site under "links" tab)

 

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Radial SGI
R800 1600 00

Studio Guitar Interface System

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.

Specifications

Audio circuit type Active 100% discrete class-A with transformer isolation
Frequency response 20Hz - 18kHz (+0dB/-2dB)
Dynamic range 112dB
Total harmonic dirstortion 0.005% @ 1kHz
Intermodulation dirstortion 0.04% @ 1kHz
Input impedance Variable from 10k - 1M Ohms
Output impedance 4.5k Ohms, ¼" unbalanced
Noise -102dBu
Maximum input +10dBu
Power 15VDC/400mA power supply (included)

(For full specifications see manufacturers product site under "links" tab)

 

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Radial SGI-44
R800 6700 00

Studio Guitar Interface For JX-44

The SGI-44 can send guitar signals over long distances without signal loss or noise, with built-in send and receive functions for bidirectional signal routing. When used in conjunction with the JX-44 guitar and amp switcher, it allows you to keep your pedalboard at your feet on stage, while instrument switching and amp control is managed remotely by your stage tech. A pair of SGI-44s can also be used together to extend the effects loop of your amplifier to any point on stage, so you can keep your favorite pedals connected to the amp's effects loop no matter how far away your amp is located. The SGI-44 takes care of all the balancing, buffering, and impedance matching to ensure your signals are delivered without noise or distortion.

Specifications

Audio circuit type Active 100% discrete class-A with transformer isolation
Frequency response 20Hz - 20kHz (+0dB/-2dB)
Dynamic range 105dB
Total harmonic dirstortion 0.005% @ 1kHz
Intermodulation dirstortion 0.02% @ 1kHz
Input impedance Variable from 10k - 1M Ohms
Output impedance 218 Ohms (¼" unbal. output); 280 Ohms (TX balanced output)
Noise -100dBu
Maximum input +2dBu
Power 15VDC/400mA power supply (included)

(For full specifications see manufacturers product site under "links" tab)

 

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Radial USB Pro
R800 1050 00

USB Laptop Direct Box

Whether you are playing backing tracks on stage, giving an audio presentation, or performing the role of DJ at an event, the USB-Pro is the easiest way to provide a high quality noise-free connection between a laptop and any sound system. Made for plug and play simplicity, the USB-Pro will automatically be listed as an available sound card in the audio settings of all popular operating systems including Windows and Mac, with 24bit/96kHz digital to analog converters that retain the quality of the audio signal. A stereo pair of balanced XLR outputs allows you to connect to a microphone preamplifier, PA system, mixing console, or even a powered speaker, with an on-board level control for quick and easy volume adjustments. Should any noise be encountered, ground lift switches are provided and isolation transformers can be inserted into the signal path to eliminate hum and buzz from ground loops, for a clean connection to the PA.

Specifications

Audio circuit type Custom decoder with analog line drive
Frequency response 5Hz ~ 40kHz (30Hz ~ 18kHz with isolation)
Dynamic range >90dB
Total harmonic dirstortion 0.01%
Gain +8dBu
Output impedance 250 Ohms (nominal)
Noise -90dB
Maximum output +8dBu
Power USB bus powered 500mA maximum

(For full specifications see manufacturers product site under "links" tab)

 

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Presenter
R800 8011 00

Presentation Mixer & USB Interface

The Presenter replaces typical audio mixers that include numerous complicated controls and knobs that rarely get used, instead opting for a simplified and intuitive layout that allows anyone to operate it and achieve high quality sound with minimal effort. An XLR mic input allows you to connect a podium microphone and provide it with phantom power. The mic signal can then be adjusted using three powerful EQ controls to tailor the frequency response. A Program input level controls the volume of the USB input or the 3.5mm jack on the front of the unit, which allows you to connect the outputs of your laptop, smartphone, or MP3 player and blend it with the signal from the microphone. XLR outputs provide balanced feeds for a set of powered speakers, making it an all-in-one portable solution for any speaking engagement.

Specifications

Audio circuit type Active Preamplifier Circuit with digital to analog input conversion
Number of channels Two channels
Frequency response 20Hz - 20kHz (-0.4dB/0dB)
Dynamic range +91dBu
Gain +52dBu
Total harmonic dirstortion 0.004% @ 20Hz; 0.004% @ 1kHz; 0.004% @ 10kHz
Intermodulation dirstortion 0.003% @ 0dBu; 0.01% @ -10dBu; 0.03% @ -20dBu
Phase deviation -28° @ 20Hz; -1° @ 1kHz; +2° @ 20kHz
Input impedance 10k Ohms
Output impedance 2.74k Ohms
Noise -84dBu
Maximum input +7dBu
Power 5V USB

(For full specifications see manufacturers product site under "links" tab)

 

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Radial mPress
R800 8010 00

Press Box & Signal Splitter

The mPress provides full control over any size of press gathering, from community gatherings to international events, and its modular design means it can grow to suit your needs. It features two balanced mic or line inputs with low-noise preamps and high-pass filters, along with a shared limiter to avoid clipping the inputs of any connected recording devices. Separate outputs are provided for a set of powered speakers, with dedicated program inputs that allow you to play background music through the PA when on standby, and a headphone output to silently monitor and cue up playback tracks. The main outputs are controlled separately from the press gallery signals, so you can make adjustments on the fly without affecting previously calibrated recording devices.

Specifications

Audio circuit type Low Noise Active Buffer
Frequency response 20Hz - 20kHz (0dB/-1.5dB)
Dynamic range >112dB
Gain +51dB (mic); 0dB (line); +19dB (program)
Clip level +24dBu / +17dBu (main output)
Total harmonic dirstortion <0.001% @ +4dB
Intermodulation dirstortion 0.002% (main output)
Phase deviation ±15° (Exo-Pod output)
Input impedance 7k Ohms (mic); 22K Ohms (program)
Output impedance 880 Ohms (main output); 115 Ohms (Exo-Pod output)
Equivalent input noise -111dBu (main output)
Noise -94dB (mic); -80/-92dBu (Exo-Pod output / program in to main out)
Power ±15V/+5V custom power supply

(For full specifications see manufacturers product site under "links" tab)

 

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Radial JDV
R800 2015 00

Active Direct Box, Preamp, & Input Switcher

The JDV makes no compromises on available features or audio quality, opting instead to provide anything you could ever ask of a high-performance DI box. Designed for studio recording or pro-touring applications, the JDV provides exceptional headroom with massive 30-Volt internal rails, resulting in virtually zero distortion and producing an incredibly transparent and natural representation of your instrument. It has two inputs which can be individually selected or blended together and phase-aligned, with the ability to handle condenser mic's, piezo transducers, and the outputs of effectively any instrument. The balanced output can be set to mic or line-level, allowing you to bypass an additional preamp and connect directly to a recording interface for pristine studio recordings.

Specifications

Audio circuit type Proprietary analog circuit with low-noise op-amp
Number of channels Two channels
Frequency response 20Hz - 20kHz
Dynamic range 107dB
Gain +25dB
Clip level +17dBu
Total harmonic dirstortion 0.004%
Input impedance Drag on: Variable from 22K ~ 500K Ohms; Drag off: 10M Ohms
Output impedance 400 Ohms
Equivalent input noise -90dBu
Common mode rejection ratio -80dB
Power External 100V - 240V AC with 48V phantom

(For full specifications see manufacturers product site under "links" tab)

 

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BT-Pro
R800 1055 00

Stereo Bluetooth DI Box

The BT-Pro makes it easy to quickly connect to any smartphone, tablet, or mobile device for high quality audio playback through a sound system. It wirelessly pairs over Bluetooth, eliminating the need to search for adaptor cables and providing you with the freedom to move around while staying connected. Balanced XLR outputs are provided for connection to pro audio equipment, and on-board isolation transformers and ground lifts help eliminate buzz and hum from ground loops to ensure a clean, noise-free signal. A level control allows for easy volume adjustments, along with a headphone output for testing and troubleshooting.

Specifications

Audio circuit type Bluetooth A2DP Transceiver with Audio Line Drive
Frequency response 20Hz - 20kHz
Dynamic range 90dB
Total harmonic dirstortion 0.01%
Output impedance 300 Ohms (nominal)
Bluetooth compliance Bluetooth 2.0 W/EDR
Power USB Mini connector (power only)

(For full specifications see manufacturers product site under "links" tab)

 

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