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Radial Interfaces

Radial interfaces

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Radial USB Mobile Tablet and Smartphone DI (NEW)
RAD-R800 1052 00

The USB-Mobile is a digital interface and direct box for all of your mobile devices, including smartphones, tablets, and other media players. Connect your device to the USB-Mobile directly using a USB cable: High quality playback, providing you with two channels of balanced analog outputs over XLR connectors to feed the PA system or a set of powered speakers. The USB-Mobile is iOS compatible, and has the added benefit of charging your devices while you use them for audio playback.

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OBSOLETE
MIX 2:1 Passive balanced mixer 2 in 1 out
RAD-R800 1036 00

MIX 2:1™ Two Channel Audio Combiner & Mixer

 

  • Mixes two channels to a single mono output
  • Individual level controls can be bypassed when not in use
  • ¼" TRS and XLR inputs
  • Completely passive, no need for power

The MIX 2:1 is a simple yet highly useful mixer that passively sums two audio channels down to one. This enables you to easily sum the stereo outputs of a console, recording interface, or portable playback device down to mono, or to mix any two signals together and balance their relative input levels.

 

At the inputs of the MIX 2:1, both ¼" TRS and XLR connectors are available, with ground lift switches to eliminate buzz and hum from ground loops and ensure noise-free operation. Each input can be individually engaged or disengaged, allowing you to audition either signal before summing both together. A trim control is also featured on each input, so if you are connecting two separate mono sources such as the outputs of two mic preamps, they can each be attenuated as needed to match their levels at the output. Both level controls can be completely bypassed, summing inputs 1 and 2 equally, and preventing accidental or unwanted level adjustments. The MIX 2:1 has a 180° flip on Input-2, to help solve issues with frequency cancellation due to the inputs being out of phase. After both signals are passively summed together, they feed a single XLR output that can be connected to a powered speaker, or the input of a console or recording interface.

 

The MIX 2:1 is built with 14-gauge solid steel, featuring I-beam construction that prevents the circuit board from being torqued which protects against solder joint failure, along with a bookend design that protects the level controls and switches. A military-spec circuit board and high quality components help maintain the integrity of your audio quality, without distortion or phase shift, resulting in completely transparent passive summing.

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SAT2 Passive 2 ch balanced stereo attenuator
RAD-R800 1035 00
  • Level and dim control for a pair of powered speakers
  • First attenuates hot signal levels to prevent clipping
  • Passive, no power needed
  • Transparent operation without coloration

 

The SAT-2 is a passive stereo audio device that provides you with attenuation and control over your signal level wherever you may need it, whether it be at the output of a pair of high-gain mic preamps, or before your studio speakers as a compact desktop monitor controller. Exceptional build quality and high-grade components ensure noiseless operation, without any degradation or coloration of the source material.

 

When using the SAT-2 as a monitor controller, simply connect it in between your playback device or recording interface and a pair of powered speakers. The SAT-2 is equally useful in a recording studio or with a simple PA rig to control the overall output levels. Both XLR and ¼" TRS options are provided for the inputs of the SAT-2, eliminating the need for adapter cables. XLR outputs connect to your speakers, while the trim knob provides an easy-access master volume control. Mute and mono switches allow you to silence the outputs or sum left and right together to check mixes for mono phase compatibility. A handy dim switch with adjustable level control allows you to temporarily lower the output volume without losing the setting on the main trim control.

 

The SAT-2 can also be used to attenuate signals before sending them to your audio interface, so you can drive your mic preamps hard for coloration without clipping the inputs of the digital audio converter. This allows you to have your preamps turned up to their sweet spot without having to engage the input pad or risk overloading when recording. A high quality 4-pole rotary knob ensures consistent L-R tracking over the entire range of the trim pot, fully maintaining the left-right balance of stereo sources.

 

Compact but extremely rugged, the SAT-2 is housed in a 14-gauge solid steel enclosure, with a book-end design that protects the connectors and switches from damage, and I-beam construction that prevents stress on the circuit board. The SAT-2 provides clean and transparent operation with a number of useful features and applications, making it a simple yet powerful device for your audio toolbox.

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TWIN ISO Stereo Isolator
RAD-R800 1024 00
* Stereo isolator, withstands up to +21dB without distortion
* Eliminates hum and buzz caused by ground loops
* Suitable for balanced & unbalanced signals
* Exceptionally linear response from 20Hz to 20kHz

The Radial Twin-Iso is a high performance two channel balanced line-level isolator for professional touring, sound installation, broadcast and studio that provides isolation between various pieces of audio equipment such as consoles, amp racks, remote towers and recorders as a means of eliminating hum and buzz caused by ground loops.
Central to the Twin-Iso are two high performance Eclipse transformers. These stellar audio engines are modelled after Deane Jensen's original designs to deliver an exceptionally linear response at all frequencies and are capable of handling as much as +21dB without distortion. Placed in between the audio source and destination, they assure absolute signal integrity is retained no matter what the program material.
As with all Radial products, the Twin-Iso is road-ready to handle the most abusive environments. It features 14 gauge steel I-beam construction and an innovative book-end design that creates a protective zone around switches and connectors. A full bottom no-slip pad provides mechanical isolation from vibrations while adding electrical insulation between electrically charged devices. When combined with the J-Rak or J-Clamp, the Twin-Iso easily integrates into 19" rack systems or may be permanently mounted inside racks or under podiums.
The Twin-Iso solves noise problems with plug & play simplicity while delivering exceptional audio signal integrity.
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J-ISO Converter from +4dB to -10dB
RAD-R800 1025 00
The J-Iso employs a premium Jensen transformer for optimal signal transfer to minimize distortion and artefact. Full bandwidth performance makes the J-Iso ideal for music production.
* Converts balanced line level signals to unbalanced
* Stereo signal path with set & forget level control
* Transformer isolated to eliminate hum & buzz
* J-Iso features Jensen™ transformers for optimal signal path

The Radial J-Iso and Pro-Iso are stereo line isolators designed to convert a professional +4dB line level balanced signal to an unbalanced -10dB consumer level device. This enables you to take the balanced output of a mixer and feed a consumer level recorder or audio input on a computer.
 
Two models are available:
J-Iso Part # R800-1025: The J-Iso employs a premium Jensen transformer for optimal signal transfer to minimize distortion and artefact. Full bandwidth performance makes the J-Iso ideal for music production.

Pro-Iso Part # R800-1150 The Pro-Iso employs a more cost effective transformer that focuses the energy in the voice range. This makes the Pro-Iso a great choice for sermons, news gathering and spoken voice.

The passive design begins with 100% discrete components throughout. A set & forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of ¼" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or lap-top computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing.
Construction begins with 14 gauge steel throughout utilizing Radial's unique bookend construction. This creates a protective zone around the connectors and controls for added durability. The steel construction also assists by shielding the transformers from outside magnetic fields. Inside, the J-Iso features an innovative I-beam skeletal insert that makes it virtually impossible to torque the PC board. This reduces potential stress which could cause premature solder joint failure.
Designed for full range applications, the J-Iso combines exceptional signal handling with the type of durability that has made Radial famous.
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PROISO Converter from +4dB to -10dB
RAD-R800 1150 00
The Pro-Iso employs a more cost effective transformer that focuses the energy in the voice range. This makes the Pro-Iso a great choice for sermons, news gathering and spoken voice.
 
* Converts balanced line level signals to unbalanced
* Stereo signal path with set & forget level control
* Transformer isolated to eliminate hum & buzz
* J-Iso features Jensen™ transformers for optimal signal path

The Radial J-Iso and Pro-Iso are stereo line isolators designed to convert a professional +4dB line level balanced signal to an unbalanced -10dB consumer level device. This enables you to take the balanced output of a mixer and feed a consumer level recorder or audio input on a computer.
 
Two models are available:
J-Iso Part # R800-1025: The J-Iso employs a premium Jensen transformer for optimal signal transfer to minimize distortion and artefact. Full bandwidth performance makes the J-Iso ideal for music production.

Pro-Iso Part # R800-1150 The Pro-Iso employs a more cost effective transformer that focuses the energy in the voice range. This makes the Pro-Iso a great choice for sermons, news gathering and spoken voice.

The passive design begins with 100% discrete components throughout. A set & forget level control lets you attenuate the input signal to prevent it from overloading the destination device. Output connections include a stereo pair of ¼" connectors, a set of RCAs and a mini 3.5mm (1/8") for interfacing to a mini recorder or lap-top computer. Transformer isolation helps eliminate hum and buzz caused by ground loops while eliminating stray DC currents from flowing.
Construction begins with 14 gauge steel throughout utilizing Radial's unique bookend construction. This creates a protective zone around the connectors and controls for added durability. The steel construction also assists by shielding the transformers from outside magnetic fields. Inside, the J-Iso features an innovative I-beam skeletal insert that makes it virtually impossible to torque the PC board. This reduces potential stress which could cause premature solder joint failure.
Designed for full range applications, the J-Iso combines exceptional signal handling with the type of durability that has made Radial famous.
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J+4 Balanced -10dB to +4dB Driver
RAD-R800 8015 00
* Stereo preamp boosts signals to +4dB balanced line level
* Increases gain for low output instruments & music players
* Transformer isolated to eliminate noise caused by ground loops
* Plenty of connector options - Plug and play easy to use

The Radial J+4 is a stereo interface designed to accept unbalanced low output level devices such as instruments, computers or CD players and boost the signal to a balanced +4dB level for easy manipulation in professional environments such as broadcast, recording studios and live touring.
The design begins with 100% discrete components for optimal signal transfer. Careful attention has been paid to eliminate noise by combining the advantages of active signal buffering with transformer isolation. The J+4 delivers better than 95dB signal to noise while ensuring hum and buzz caused by ground loops along with spurious noise from clocking does not pollute the signal path. For ease of use, controls have been kept to a minimum. This includes a stereo level control, a high pass (low cut) filter and ground lift. The choice of input connectors include a stacked set of ¼`` jacks for DJ mixers or keyboards, RCAs for CD players and a mini 3.5mm for iPods.
As with all Radial products, the Radial J+4 is built tough to handle the extreme rigors of professional touring. A unique 14-gauge steel I-beam inner frame ensures the sensitive PC board will not be subjected to outside stress which could potentially cause solder joints to fail. An innovative book-end outer shell creates protective zones around the controls, switches and connectors to further improve dependability while a full bottom no-slip pad provides both mechanical and electrical isolation.
The Radial J+4 balanced line driver delivers exceptional sonic performance, plenty of headroom and ultra low noise making it the ideal companion for today's more demanding professional audio systems.
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JPC Computer Direct Box
RAD-R800 1026 00
* Easy to use stereo interface for laptop computers
* Active signal path with transformer isolation
* Eliminates hum and buzz common to PCs
* Full connector options set for easy interface

The Radial JPC is an analogue stereo interface designed to help solve the buzz and hum problems commonly associated with connecting a computer to an audio system. This is accomplished by combining active buffers and transformer isolation to create an effective 'hybrid' circuit.
Intended for professional field use, the JPC comes fully loaded with choice of ¼", RCA and 3.5mm input connectors that make it easy to interface with all types of unbalanced audio sources such as computers, iPods, and CD players. It is equipped with isolation transformers to eliminate hum and buzz caused by ground loops and to further reduce system noise; while AC blocking capacitors in the active circuit prevent pollution from the audio system from bleeding back into the computer. Outputs are XLR balanced mic level for easy interface to snake systems and PAs. Powering the JPC is accomplished via 48V phantom from a mixing console. This enables the JPC to be used in concert environments without requiring an external power supply.
The JPC is a great sounding stereo direct box that is plug-and-play easy to use with practically any consumer electronic device. The noise eliminating advantages makes the JPC a must-have problem solver for any technician's audio kit.
The Radial JPC... an effective tool designed to make interfacing gear easy.
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McBoost microphone signal intensifier
RAD-R800 8016 00
* 25dB signal booster for dynamic & ribbon mics
* Extends dynamic range and microphone reach
* Uses standard 48V phantom for power
* 3-position load switch and high-pass filter

The Radial McBoost™ is a high performance microphone signal booster designed to elevate the output of a typical dynamic microphone for greater transient response and boost the signal of a low-output ribbon mic to bring it up to a usable level for mixing consoles or preamps that may not provide sufficient gain.
The 100% discrete class-A circuit design begins with a dual-transistor J-FET circuit to produce up to 25dB of gain without introducing noise, color or artifact. Each individual transistor is carefully measured and batch-sorted to comply with the design specification to certify performance. As with all Radial™ products, the circuit board is then loaded into a 14-gauge, I-beam, reinforced steel enclosure to prevent outside stress from torquing which otherwise could lead to premature part failure. A book-end cover creates protective zones at each end to safeguard the switches, potentiometer and connectors from the rigours of the road.
Merely connect the McBoost in-line using standard 3-pin XLRs and activate 48V phantom to provide power. Select between three impedance settings to optimize the response and then reduce low-frequency clutter with the 3-position high-pass filter. The McBoost will elevate the output to produce added clarity, excitement and extra drive for long cables whether you are in a recording studio, on a live concert stage or in a broadcast center.
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SGI Studio Guitar Interface System
RAD-R800 1600 00
* Balanced line driver for guitars and bass
* Send signal over 100 meters (300 feet) without loss
* 100% discrete class-A with Drag Control™
* Delivers pure sound without artefact

The Radial SGI is a high performance line driver that takes an unbalanced guitar signal and allows you to drive it as far as 100 meters (300ft) without noise. 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 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.

The real magic occurs inside. The design begins with full size 100% discrete parts with Radial's award winning class-A buffering circuit design. This is augmented with Drag Control™ load correction that lets you replicates the tone and feel as if connecting a guitar directly to a tube amplifier. To ensure noise free performance the system is transformer isolated, eliminating hum and buzz caused by ground loops. And with artists as diverse as Carlos Santana, Eric Clapton, Jeff Beck, Joe Perry and Metallica all using the SGI, you can rest assured the tone of your guitar will sound the way it should.
The Radial SGI – The world's most amazing guitar signal driver!
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SGI44 Studio Guitar Interface
RAD-R800 6700 00
* Bidirectional long-distance 'send & receive' effects router
* Drive guitar & bass signals beyond 100 meters
* 100% discrete class-A circuitry
* Works with the Radial JX44 guitar & amp selector

The Radial SGI-44 is a studio quality bidirectional effects router that designed to take the output from a wireless receiver and run the guitar signal to the pedalboard and back. Two SGI-44s are used with one positioned at the wireless end, the other at the pedalboard. Connection is made using standard XLR cables.
The first SGI-44 converts the unbalanced high-impedance guitar signal to a balanced low-impedance signal and the second reverses the process - thus allowing distances of more than 100 meters (300') without noise. To ensure optimal signal quality, the SGI-44 employs 100% hand-inserted discrete parts with Jensen isolation transformers to make up the class-A circuit. Although less efficient than the chip based AB circuits that are common with today’s ‘cost driven’ designs, single ended class-A circuits are preferred by audiophiles due to the lack of zero-cross distortion. These  deliver greater transparency and realism. To further improve the feel, the SGI-44 is equipped with Drag Control load correction. This allows you to 'dial in' the perfect load as if connected to a tube guitar amp using a standard guitar cable. To add versatility, the SGI-44 is equipped with a buffered tuner out for quick between song adjustments or can be used to split the guitar signal to a second signal chain if need be.
Built 'Radial tough' the SGI-44 is made in Canada using 14 gauge steel. An innovative I-beam internal frame protects the sensitive circuit board from outside stress which could torque the solder points and cause premature failure. Radial's innovative book-end construction creates recessed zones at each end that protect connectors, switches and controls from harm's way.
The Radial SGI-44 makes it easy to route guitar signals around a stage, in the studio or in a large venue while delivering the very best signal quality.
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Stagebug SB-6 Isolator
RAD-R800 0160 00
* Isolator for balanced and unbalanced signals
* Eliminates hum and buzz caused by ground loops
* Exceptionally linear from 20Hz to 20kHz
* Automatically configures for hi-Z or lo-Z signal chains

The Radial StageBug® SB-6 is a high performance 2-channel passive audio isolator designed to accommodate both balanced and unbalanced signals and work effectively at eliminating noise when used with instruments, consumer electronics as well as professional line-level devices.
The design begins with ¼" TRS inputs and outputs to accommodate both TRS and mono type connectors. The unique circuit retains the balanced signals or automatically converts them from hi-Z to lo-Z (¼" mono to TRS) or lo-Z to hi-Z (1/4"TRS to mono) depending on the connector in use. You simply connect and the SB-6 does the work for you! Inside are two ultra-linear Eclipse transformers that sound great as they deliver ruler flat performance from 20Hz to 20kHz. This is augmented with a -10dB input pad to handle extra loud source devices and a polarity reverse on output B for phase aligning stereo signals. As the circuit is passive, no power is required – simply plug in and play. As with all Radial products, the SB-6 is made in Canada and features 16 gauge steel construction for use on the road and finished in a durable powder coat finish.
These features combine to make the SB-6 Isolator a wonderful solution to help rid system noise in two channel audio systems, stereo guitar racks and pedalboards.
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Stagebug SB-7 Earmuff Headphone Silencer
RAD-R800 0170 00
* Turns off one side of headphones to stop bleed
* Artist can hear both playback and instrument
* Level control enables artist to set ideal volume
* Completely passive, does not require power

When overdubbing in an orchestral setting, the artist is usually listening to a pre-recorded track while playing his or her part of the score. To better hear the pitch and tonality of the instrument, the artist will often remove one side of the headphones by pulling it away from one ear. In doing so, the headphone level is increased to compensate and this in turn, causes sound from the open phone to bleed into the recording microphone, contaminating the mix. This is a common problem when recording violins, flutes and other orchestral instruments.
The Radial StageBug SB-7 Earmuff is a compact device that solves the problem by enabling the artist to turn off one of the phones, thus eliminating the bleed problem altogether.
The design begins with a ¼" stereo TRS input on one side that accepts a standard headphone mix along with a level control. On the output side, a choice of standard ¼" headphone or 3.5mm (1/8") ear bud outputs provide instant connectivity without the need of a special adaptor. A mono switch enables the artist to sum the left-right stereo playback track to mono so that all instruments are routed to both sides of the headphones. Then, depressing the 'off' switch mutes the left ear of the headphones to eliminate bleed while leaving the right side unaffected. One simply adjusts the on-board level control to suit. Because the SB-7 Earmuff is completely passive, no power is needed nor will it introduce any distortion or artefact into the signal path. Plug it in and it is basically ready to go.
Compact, easy to use and affordable, the Radial StageBug SB-7 Earmuff provides a simple, yet elegant solution to a long standing problem.
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Stagebug SB-15 Tailbone
RAD-R800 0115 00
* 100% discrete Class-A buffer
* Drag™ control load correction
* Drives pedals to 15 meters (50')
* Converts two 9V supplies to 15 VDC
 
The Radial SB-15 Tailbone is a high performance signal buffer designed to sit at the beginning of the signal chain and drive multiple pedals without the added noise that often plagues high impedance circuits.
 
The ultra-compact design begins with a standard Hi-Z instrument input. The signal is then 'tamed' using Radial's unique Dragster™ load correction circuit to replicate the tone and feel as if connected directly to the amplifier. The signal is then buffered via a 100% discrete, class-A unity gain amplifier. Unlike most others that employ ICs or integrated circuits to buffer the signal, the discrete design reduces the need for phase-cancelling negative feedback producing a more natural and pleasing tone. This is further advanced with the same award winning class-A buffer that is in the Radial JD7 and used by guitarists as diverse as Steve Vai, John Petrucci, Steve Lukather and many others. Once buffered, the Tailbone lowers the impedance and susceptibility to hum and buzz caused by radio interference and electromagnetic fields. The SB-15 is then able to drive multiple pedals distances of 15 meters (50') without noise.
 
The SB-15 Tailbone is powered by a standard Boss-style 9V supply (not included). As an extra bonus, when using a Tonebone pedal that requires 15V on your pedalboard, you can combine two 9V outputs from your power brick and the Tailbone will convert them to 15VDC and provide the correct voltage polarity. This makes adding a high-end Tonebone to your pedalboard easy!
 
The Radial SB-15 Tailbone delivers exceptional sonic quality, reduces noise and adds the convenience of 15VDC power for your Tonebone.
 
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ICE CUBE IC-1 Balanced Line Isolator and Hum Eliminator
RAD-R800 1031 00
* Eliminates hum & buzz caused by ground loops
* Exceptionally linear response from 20Hz to 18kHz
* Able to handle pro output levels without choking
* Plug & play easy to use with XLR in & out

The Radial IceCube IC-1 is a balanced line level isolator designed to quickly eliminate hum and buzz problems in an audio system by simply inserting it into the signal path.
Measuring just over 4" x 1 ½" (10 x 4cm), the compact design begins with two super-duty glass-filled nylon XLRs at each end with heavy duty nickel-silver contacts that will not tarnish over time. Unlike other isolators that are made of plastic, the IceCube is made from solid 16 gauge steel and finished in a tough powder coat. The steel outer shell is not only more durable, it provides excellent shielding against electromagnetic fields radiated by power cables, dimmers, motors and power supplies - delivering consistently quieter results when deployed. This is augmented with a 'set & forget' ground lift switch to eliminate hum and buzz caused by ground loops.
Inside the IceCube, a proprietary Eclipse transformer isolates the input from the output and blocks stray DC currents. While small transformers rarely perform well below 100Hz, the IceCube is exceptionally linear from 20Hz to 18kHz. It is also able to withstand up to +10dB at 20Hz with less than 0.01% distortion. It is a quick and easy problem solver that will eliminate noise without limiting the bandwidth or introducing phase shift, harsh sound or unpleasant artifacts.
These features combine to make the IceCube an ideal problem solver for the AV technician and audio engineer that work in the fast-paced world of live touring, AV rentals and system integration.
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Radial Decoder- Mid/Side Matrix and Mic Preamp
RAD-R800 1415 00
* Quick and easy mid/side recording without a mixer
* Three ultra-quiet built-in mic preamps
* Pre-mixed stereo outputs
* Line level operation for use with pre-recorded tracks

The Radial Decoder is a microphone preamp and mid/side stereo matrix that allows the user to easily create M/S recordings without having to re-configure a recording console. Featuring built-in mic pre's with phantom power and independent level control, the Decoder automatically combines the signals to a stereo output using the sum-difference method for spectacular stereo imaging that translates well to mono for broadcast.
The Decoder begins with three ultra-quiet microphone preamps. The mic/line input-1 is assigned to the MID or direct microphone, while mic/line input-2a is assigned to the SIDE microphone. A link button automatically duplicates and pans the signal and flips the phase for a traditional M/S stereo image when used with figure-8 microphones. Mic/line input-2b allows the Decoder to be used with a pair of cardioid microphones rather than a figure-8. This opens up the door for a variety of microphones and different spacing techniques to be employed for ultimate convenience and creativity. The Decoder can also be switched to +4dBu line level for Reamping™ pre-recorded material during mix-down. Simply record a SIDE microphone while tracking and bounce to a stereo M/S image later.
As the Decoder is intended for use in the studio or in the field, the chassis is built out of heavy duty 14-gauge steel. The internal I-beam frame and book-end construction prevents premature damage to internal circuitry and protects knobs and switches from impact. A full bottom no-slip pad provides electrical insulation and mechanical isolation to reduce mishap. The chassis can also be rack- mounted on its own or with other Radial products using an optional rack kit.
The Decoder… mid/side recording has never been so easy!
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OBSOLETE
SPACE HEATER Analog Summing Mixer & Tube Drive
RAD-R800 7050 00
* 8-channel 12AX7 tube overdrive with summing mixer
* 35, 70 and 140 volt Heat switch
* Channel outputs allow for use on single tracks
* Transformer coupled outputs for vintage tone

The Radial Space Heater is a single space 8-channel tube overdrive that can be used as a stereo summing mixer or as multi-channel studio distortion. Connect it to your digital interface to sum tracks in the analog domain, or use it as a hardware insert to add character to individual channels. With complete control over each tube circuit, the Space Heater can provide everything from subtle transformer warmth to full on harmonic distortion.
The design begins with eight +4dBu balanced line level inputs that feed four 12AX7 tubes wired in stereo. A heat switch on each channel lets you apply between 35, 70 or 140 volts to the tube to modify the performance. When set to a lower voltage; it starves the tube, increasing distortion producing filthy layers of grit. When the voltage is set to maximum; the signal cleans up resulting in natural tube warmth with wonderful harmonic overtones. Separate DRIVE and LEVEL controls let you fine-tune the settings on each channel to increase or decrease distortion to suit. Each of the eight outputs is equipped with an oversized output transformer for beefy character while providing galvanic isolation to eliminate noise. You can also bypass the tube circuit and drive the transformer on its own to produce a vintage feel that is reminiscent of the finest audio designs from yesteryears.
Connections to and from the Space Heater include ¼" TRS and 25-pin D-Sub balanced inputs, balanced ¼" TRS send and receive insert points, and an 8-channel balanced D-Sub output. The send jacks or the D-subs can be used to process individual instruments, enhance a sterile vocal track, add 'grind' to a bass track or 'sparkle' to an acoustic guitar. Used as four stereo pairs, the Space Heater can be used to fatten stereo stems or with in-ear monitor systems to add natural tube compression to create a more enjoyable on-stage experience. All eight channels can be sent to the master left-right XLR outputs for stereo summing with odd channels routed left and even channels routed right. This set up is often used to add crunch to drum kits or for traditional analog (out-of-the-box) summing and can be expanded using the link connectors for 16, 24 or 32 x2 summing requirements. This is supplemented with high-pass filters on each channel that help clean up tracks by removing excessive low frequency resonance.
The Space Heater… a character box with an attitude you will love!
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Twin Line Effects loop interface for two amps.
RAD-R800 1430 00
* Shares your pedalboard between two amp loops
* Lets you optimise the signal path for each amp
* Works with pedals or balanced studio processors
* Can be remotely controlled using a footswitch

The Radial Twinline™ is a unique device that enables a guitarist to share effects pedals between two amps when using the amplifier's built-in (rear-panel) effects loops.
Consider the problem: Many guitarists prefer to use the effects loop in the amplifier to insert pedals into their signal chain. This is particularly useful with delay pedals where applying echo to the signal after the guitar amp's preamp distortion as this results in more distinctive notes and more pleasing sonic results. A problem arises when using two amps on stage: how do you toggle the pedalboard between the two amps? The guitar player must either duplicate his pedal setup (one for each amp) or completely change his setup by connecting the pedals to an AB switcher and then connect the pedals to the front panel inputs of the amps.
The Twinline can be thought of as a pedalboard switcher that lets you remotely toggle the effects from one amp's effects loop to the other, thus allowing the guitarist to share his pedalboard between the two amps. To accomplish this, the Twinline is equipped with two amplifier effects loop circuits – each with separate send and receive levels to optimize the signal path for each amp's effects loop. There is also a third effects loop for the pedalboard. This features a choice of unbalanced ¼" connectors for typical guitar pedals or balanced XLR connections for studio effects. A remote control input is used to toggle the active amplifier's effects loop via a contact closure using a MIDI system or latching footswitch. When used with the optional Radial JR2™ remote, this adds the ability to bypass the effects completely.
As with all Radial products, the Twinline is made from heavy duty 14 gauge steel for ultimate durability and maximum shielding against stray magnetic fields while the book-end design creates a protective zone around the controls and switches. Inside, 100% discrete class-A electronics deliver optimal sonics as it buffers the circuit while transformer isolation eliminates troublesome ground loops that can introduce hum and buzz if left unchecked.
The Radial Twinline brings forth a unique solution to a long standing problem.
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OBSOLETE
MR5 - Midi to Radial JR5 Translator
RAD-R800 6605 00
* MIDI interface to control JX44 & JX42 data stream
* Standard-5 pin MIDI in and thru connections
* Two XLR outputs to control both amp and guitar switching
* DIP switch to configure channel, program or control changes

The Radial MR5 is a MIDI signal translator that allows you to use a MIDI controller to drive the JX44, JX42 and other Radial products that use the JR5 footswitch. Equipped with MIDI in, out and thru jacks, the MR5 converts the MIDI data stream from the controller to a data format used by the JR5. This is then sent to the receiving Radial device via XLR jacks to remotely control active inputs, outputs or other remotely accessible functions.
The MR5 can be configured to any one of the standard 16 MIDI channels or used in Omni mode to respond to all MIDI channels at the same time. Instrument switching on the JX44 or JX42 can be controlled by MIDI control changes while the amplifier switching on the JX44 can be controlled via MIDI control changes, MIDI program changes or both simultaneously. The MR5 can be used in conjunction with the JR5 so the musician can still enjoy stage remote controllability while the MR5 receives control messages from a sequencer, control pedal or a MIDI track from background orchestration software.
Using the MR5 is easy to integrate into any MIDI setup. A side access 8-position dip-switch enables the user to configure the MIDI setup as needed while a side access reset switch allows for instant setup recovery. Standard XLR cables connect the MR5 to the JR5 inputs on various Radial products, while MIDI equipment connects using standard 5-pin DIN connectors. Because the host Radial product automatically powers the MR5, no external power supply is required.
The Radial MR5… an easy way to add MIDI to your Radial switcher setup!
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OBSOLETE
USB PRO Stereo USB Laptop DI
RAD-R800 1050 00
* High performance 24bit digital audio converter
* Ready to use without the need of a driver
* 3.5mm analog headphone output to check signal
* Balanced Lo-Z outputs with switchable isolation
 
The Radial USB-Pro is a high-resolution stereo digital audio converter (DAC) and direct box that is designed to connect to any computer system to seamlessly transfer digital audio to analog. A stereo pair of balanced XLR audio outputs with adjustable level control then feeds the signal to a microphone preamplifier, PA system, mixing console or even a powered speaker! Made for plug and play simplicity, the USB-Pro will automatically be listed as an available sound card in the audio settings in all popular operating systems including Windows XP, Windows 7/8, and Mac OSX.
Connection to a computer is accomplished through a standard USB type-B port. Digital-to-analog conversion can be monitored on headphones through the 3.5mm analog output to check signal quality and level before connecting to a sound system. A mono-sum switch may be engaged to check for phasing or for connection to a mono system. Should hum or buzz caused by ground loops be encountered, two recessed side-access switches allow the user to insert isolation transformers into the signal path. To further reduce susceptibility to noise, this is augmented with a ground lift switch that lifts pin-1 on both XLR jacks.
As with all Radial products, the USB-Pro is designed to handle the rigors of professional touring. Our unique book-end design creates protective zones around the switches, connectors and controls to keep them out of harm's way. Inside, our time-tested I-beam construction assures the sensitive internal PC board will not torque, which could cause premature part failure. Finally, a full bottom no-slip pad provides mechanical isolation and electrical insulation to ensure quiet operation.
 

"The Radial USB-Pro is the greatest and most useful device to come along in recent years. With the advent of more and more video playback and computer backing tracks that are now prevalent in touring, I find that I cannot live without these units anymore."
 
Dave Natale
(The Rolling Stones, Fleetwood Mac, Joe Cocker, Tina Turner)
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