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Radial Active DI-boxes

"I love my Radial J48 direct boxes! They produce a big, fat and clean signal that is so good, they are the ones I use for my live recordings. Thank you Radial"

Tommy Emmanuel

 

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RAD-R800 0110 00
Stagebug SB-1 Active Acoustic DI
* Active direct box for acoustic guitar
* Ultra compact to fit in your guitar case
* Plug & play easy to use feature set
* 48V phantom powered, no batteries needed!
 
The Radial SB-1 Acoustic is a high-performance active direct box made for players that are on the move. Made to fit inside a guitar case, the SB-1 is the smallest Radial DI box ever! But don't let the small size deter... this ultra-compact StageBug sounds absolutely terrific!
 
The design begins with standard ¼ instrument input with a thru-put to feed your tuner or your on-stage amp. The ultra-quiet active circuit at once converts the signal from high to low impedance to reduce susceptibility to noise. The signal is then buffered and balanced for long cable runs to the PA system. 48 volt phantom provides the power, so the SB-1 does not require batteries or external supply to make it work. You simply plug in and you are ready to go!
 
The active circuit features a carefully selected 800k-ohm input impedance to eliminate problems with loading while delivering a crisp, clear sound to the audio system. This delivers extra sparkle to the top end when interfacing vintage guitars with low output pickups and is particularly handy should you plan to use it for recording or Reamping. The SB-1 is also equipped with a -15dB pad that reduces the input sensitivity to gracefully handle even the loudest active instruments. This makes the SB-1 perfectly well suited for electric bass and keyboards. To reduce feedback, toggling the 180° polarity switch helps eliminate hot spots on stage that can cause low frequency resonance.
 
The StageBug... small size, big heart, huge sound!
 
 
RAD-R800 0140 00
Stagebug SB-4 Piezo DI
* Active DI optimized for piezo transducers
* Smoothes out peaks, eliminates squawk
* High pass filter eliminates resonance
* Ultra compact to fit in your guitar case
 
The Radial StageBug SB-4 is a compact active direct box that has been optimized for use with piezo transducers. This enables violin, dobro, mandolin, cello, upright bass and other instruments that are best amplified using a piezo to be connected without compromising the tone or frequency response.
The design begins with a ¼" input for the instrument pickup. Unlike typical direct boxes that have a 1meg-ohm input impedance, the SB-4 features a very high 10meg-ohm impedance that smoothes out troublesome peaks that give piezos a bad name.
The higher impedance also broadens the frequency response for a more natural and pleasing sound. The active circuit performs the high-to-low impedance conversion and balances the signal to enable long runs upwards to 100 meters without loss, delivering spectacular linearity and low distortion throughout the audio range.
To help eliminate feedback on stage, the SB-4 is equipped with a high-pass filter and 180° polarity reverse switch. The high pass filter eliminates excessive bottom end which in turn reduces resonance that can cause the top of the instrument to vibrate.
The 180° polarity reverse helps reduce acoustic hot spots on stage by changing the phase relationship between the PA system and room acoustics which can combine at certain frequencies to create peaks.
Reversing the polarity eliminates the acoustic peak without resorting to severe equalization which only serves to compromise the natural tone of the instrument.
Connections include an AUX out for a stage amplifier plus a standard XLR output to feed the PA. Power is derived from the console's 48V phantom, thus eliminating the need for batteries or external supply. One simply connects, turns on the phantom power and plays!
These features combined with the compact size make the StageBug SB-4 the perfect companion for orchestral artists, blue grass players and pop string quartets that need to turn it up when in concert.
RAD-R800 3005 00
PZ-DI Orchestral Instrument DI
* Optimized for orchestral instruments on a live stage
* Adjustable load for piezo and magnetic pickups
* Variable low-cut filter to control bass resonance
* 48V phantom powered, does not require batteries

The Radial PZ-DI™ is a unique direct box that is specifically designed for acoustic and orchestral instruments. Unlike most direct boxes that are limited to a 'one size fits all' design, the PZ-DI lets you properly match the input impedance to the source to optimize the frequency response, dynamics and feel so that no matter what type of pickup you employ, you will enjoy smoother, more musically pleasing results.
The design begins with a 3-position load adjustment switch: The 1 meg-ohm position delivers the classic impedance found on most active DI boxes. The 220k-ohm setting warms up the tone of a magnetic pickup to give you the feel and tone as if connected to a tube amplifier. The ultra-high 10 meg-ohm impedance is used to compensate for the harsh, squawky tone that usually plagues piezo-equipped instruments. This is followed by a fully variable high-pass filter that lets you 'size the instrument' by gently rolling off bass frequencies to eliminate unwanted resonance. You could for instance, retain the low frequencies on a cello or increase the cut-off point to better suit a violin. For active instruments such as acoustic guitars that incorporate a battery powered preamp, you can engage a low-pass filter to gently soften the hard edge for a smoother more natural tone.
To maximize signal handling and reduce distortion, the PZ-DI incorporates an innovative DC to DC switching supply that converts the phantom power to deliver extra headroom. This provides ample dynamic range for acoustic instruments. Should an extra loud source such as an active bass or digital keyboard be encountered, simply activate the -15dB pad to satisfy the situation. Other problem solvers include a 180° polarity reverse switch to tame hot spots on stage that can cause feedback and a ground lift switch to help eliminate hum and buzz caused by ground loops.
The Radial PZ-DI is a ground breaking direct box that can instantly adapt to all types of pickups so that you can enjoy the full frequency response and dynamics of an orchestral string instrument, smooth-out the peaks of bluegrass fiddle, banjo or mandolin, split off a bass guitar without excessive loading, or naturally amplify an acoustic guitar without the usual tone-altering effects.
 

"With the PZDI, we were able to integrate multiple piezoelectric devices seamlessly and with glorious results. Radial has once again proven they are a cut above the rest."

Brad Madix
(Rush, Shakira, Marilyn Manson, Def Leppard)
RAD-R800 3001 00
J48 Phantom Powered Active Direct Box
* Ultra low distortion of all types
* Exceptional headroom & dynamic range
* Retains instrument's natural sound
* Powered by 48V phantom

The Radial J48 has been designed from the ground up to deliver the most natural tone. As a direct box manufacturer, we do not believe it is our task to alter the sound of your prized '1962 Fender Jazz Bass', but retain and transfer the true character of the instrument to the mixing console without adding distortion or introducing artifact. This design philosophy has gained a tremendous following from many of the world's most demanding musicians.
Using only 48V phantom power, the Radial J48 is an active direct box that produces an exceptionally linear response that extends from 20Hz up to well above 40kHz. Low distortion of all types is achieved via a unique digital switching power supply that raises the internal operating rail voltage for added headroom and improved signal handling. The results are truly amazing. The J48 delivers an ideal even-order harmonic cascade and a sonic performance that outperforms DIs costing several hundreds more.
And like all Radial products, the J48 is both feature-rich for studio and made tough to handle the road. This includes a -15dB input pad to tame extra loud signals, 180º polarity reverse for feedback control on stage and a ground lift to help reduce hum & buzz caused by ground loops. Special features include a merge function that elegantly mixes left-right signals to mono without phase cancellation. To minimize resonant feedback with acoustic instruments, the J48 is also equipped with an 80Hz high-pass filter (low-cut). When engaged, this also increases headroom by eliminating unneeded bass frequencies.
Radial's innovative book-end design protects switches and connectors from abuse while the internal I-beam construction eliminates stress on the PC board. This serves to reduce solder joints from going 'cold' and delivers trouble-free performance for years. A full-bottom no-slip pad provides mechanical and electrical isolation while providing plenty of 'stay-put' for rockin' stages!
The Radial J48 is used by artists as diverse as acoustic guitarist Tommy Emmanuel; super-star engineer Joe Chiccarelli; and one of the most successful bands of all time Fleetwood Mac. The Radial J48… the world's finest 48V phantom powered active direct box.
 
Tommy Emmanuel
"I love my Radial J48 direct boxes! They produce a big, fat and clean signal that is so good, they are the ones I use for my live recordings. Thank you Radial"
Tommy Emmanuel
(Certified Guitar Player)
RAD-R800 3002 00
J48 STEREO Phantom Powered Active Direct Box
The Radial J48 Stereo is a high performance active direct box designed for professional touring and studio recording. It features the same award-winning signal path that has made the single channel J48 the most specified active direct box on tour today. And with users as diverse as Paul McCartney, Tommy Emmanuel and Joe Chiccarelli, you can be sure it will meet the most demanding qualifications.
 
The design begins with a rugged 14 gauge steel construction and a bookend design that protects sensitive switches and connectors from damage. The internal I-beam construction ensures the fragile internal PC board will not torque, which in turn could lead to cold solder joints developing and premature failure. All connectors are made from glass-filled nylon and feature extra large nickel-silver contacts that will not tarnish over time.
 
Inside, a unique switching power supply converts the 48 volt phantom to AC, increasing the headroom for improved signal handling and lower distortion. This results in an exceptionally linear frequency response that spans from 10Hz to 40kHz while being able to handle high output instruments without choking. In addition, a -15dB pad may be engaged for extreme signal handling. This is supplemented with a high-pass filter that gently rolls off low frequencies below 80Hz to clean up mud and excessive resonance. A side-access 180º polarity reverse aids when using the J48 Stereo with dual element pickups to either phase align the sources or eliminate acoustic hot spots that can cause feedback on stage.
 
A unique aspect of the power supply is the way that the J48 handles buzz and hum caused by ground loops. The traditional solution is to lift the audio ground by disconnecting pin-1 at the XLR output. When this is done, the 48 volt phantom power from the console is shut off, forcing one to introduce a battery into the equation. Unfortunately, batteries are inconsistent, and when they begin to drop power, severely affect the available voltage and resulting headroom. Instead, the J48 employs a DC to DC converter with a high frequency transformer that enables the audio ground to be lifted at the power supply. This does not shut off the phantom power and is invisible to the user.
 
The Radial J48 Stereo – Twice as good as the world's finest phantom-powered active DI!
 

- Ultra low distortion of all types
- Exceptional headroom & dynamic range
- Retains instrument's natural sound
- Powered by 48V phantom

 
RAD-R800 1402 00
JDX-48 Reactor Guitar Amp Direct Box
* Captures sound of both the head and the cabinet
* Delivers consistent tone - show after show
* Works equally well on electric guitar and bass
* Can be used with 48V phantom power or DC supply

The Radial JDX 48 Reactor is a direct box designed to capture the explosive dynamics and warmth of an electric guitar amplifier by connecting between the guitar amp head and speaker cabinet. This delivers a sound that is similar to a well-placed microphone while eliminating the frustrating inconsistencies.
The design begins with 100% discrete class-A circuitry and a transformer-coupled 'reactive load' that captures both the sound from the amp head along with the back electromagnetic impulse from the loudspeaker. This produces a more realistic rendering than the usual resistive pad offered by other manufacturers. The signal is then processed via a carefully designed multi-stage filter to emulate the tone of a 4x12 half stack cabinet.
In use, the JDX 48 delivers greater consistency over a typical microphone as irregularities such as mic placement and varying acoustics no longer play the dominant role on stage. This is most appreciated when using in-ear monitors as the tone remains consistent from one show to the next, resulting in shorter setup times and a more comfortable audio feed for the artist.
Although originally designed for guitar, the JDX has also become a favorite on bass. The clarity and punch in the lower midrange delivers a tone that is reminiscent of an Ampeg SVT connected to an 8x10 cabinet. On guitar it sounds as if you have a Shure SM57 in front of a Marshall half-stack. This new version also offers greater power handling for 300 watt amps and extended low end for deep bass frequencies.
The JDX 48 Reactor… the most natural sounding amp DI ever!
 
"The JDX gave me all the character and distortion without the worries of bleed and feedback. I was so surprised how close it sounded to the SM57, I had to double-check the patch."
Jim Warren - FOH
(Radiohead, Arcade Fire, Nine Inch Nails, Peter Gabriel, Crowded House, Duran Duran)
RAD-R800 1050 00
USB PRO Stereo USB Laptop DI
* 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)
RAD-R800 1055 00
BT-Pro Bluetooth Direct Box
* Bluetooth reception to 12 meters (40 feet!) "Delivery December 2016"
* Dual balanced XLR outputs to connect to PA system
* Built-in headphone amp for troubleshooting
* Isolation transformers to eliminate buzz and hum

The BT-Pro is a Bluetooth® direct box designed to capture the wireless transmission from a Bluetooth® enabled device and convert the signal to a balanced line for use in a PA or recording system. It employs an innovative T-shaped access cavity behind which is located the antenna. This is protected by a milled insert made from Sintra® – a rugged closed-cell PVC - that permits the wireless transmission signal to pass without interference, allowing reception distances of 12 meters (40') or more with line of sight between devices.
 
The audio signal path itself employs the latest Bluetooth wireless A2DP interface over 2.0 EDR (Enhanced Data Rate) for higher speed transmission to deliver optimal audio quality . This standard employs a 16-bit wireless compressed format with the actual bit rate determined by the transmission source material. Inside, the BT-Pro converts the data to a stereo analog signal, producing up to +4dB at the output. The signal level is controlled by a front panel potentiometer that is shared with the built-in headphone amp with standard 3.5mm mini TRS that is used for troubleshooting.
 
For greater flexibility, a stereo-to-mono switch sums the stereo output for dual-mono operation to reduce input channel requirements on the mixer or to share the signal between separate systems. Should noise be encountered, two side-mounted isolation transformers may be inserted into the signal path. This is supplemented by a ground lift switch for the XLRs to further help eliminate hum and buzz caused by ground loops.
 
Connecting to the BT-Pro is easy. The BT-Pro is powered by an external 5V supply via a mini USB port and may also be powered from a laptop or USB hub. Once turned on, two top-mounted LEDs will toggle as it awaits pairing. Turn on your Bluetooth device and its transceiver sends an initial pairing message to identify the BT-Pro. This will show up as 'RadialEng'. A connection pass code is then used to initialize the connection. This important safety feature ensures other nearby Bluetooth devices cannot 'pollute or hijack' the system. Once paired, the BT-Pro's blue LED will flash every 3 seconds to let you know the two Bluetooth devices are talking to each other.
The Radial BT-Pro… a wireless DI made for professional touring.
RAD-R800 1105 00
PRO48 Active Direct Box
* High performance active direct box
* Increased dynamic range and headroom
* 48V phantom powered with switching supply
* Ideal for acoustic guitar and bass
 
The Radial Pro48 is a compact high-performance 48V phantom powered active direct box designed specifically for todays high output instruments.
 
The Pro48's innovative internal switching power supply significantly increases headroom producing less distortion while yielding a smooth, linear response that extends from 20Hz to well above 40kHz. This results in natural, uncolored signal that is as good or better than DI boxes costing several times more. The superior performance makes the Pro48 an ideal candidate for use with battery powered active basses and acoustic guitars that tend to overload other direct boxes.
 
The compact Pro48 is built road-ready with 14 gauge steel throughout. A unique book-end™ design creates a protective zones around the switches and connectors while the internal I-beam construction assures outside stress will not torque the PC board and deteriorate solder connections. A full bottom no-slip pads adds mechanical isolation and electrical insulation to further extend the Pro48's lifespan.
 
Exceptional sonic performance, great natural tone and an affordable price tag! The Radial Pro48 truly represents a breakthrough in value.
 

"The J48 works great. It is very transparent, which is important if you're trying to preserve the sound of your 1962 Fender Precision!"
Rob Nevalainen
(Tom Petty, Matchbox Twenty, Prince, Def Leppard, Rush)
 
RAD-R800 1404 00
JDX Direct Drive Amp Simulator and DI Box
Guitar amp simulator for pedalboards
Eliminates need to bring an amp to the gig
4 x 12, half-stack & open back combo tone
 
 
The Radial™ JDX Direct-Drive is a unique and powerful device that simulates the sound of a guitar amplifier while doubling as a direct box. Unlike a typical direct box that merely transfers the sound of the pedals to the PA, the Direct-Drive simulates the tone and feel of a real guitar amp, producing a much more realistic sound. In other words, with the Direct-Drive on your pedalboard, you can do a gig without carrying an amp to the club.
The design begins with a traditional ¼” guitar input and passive thru-put to feed a stage amp. This is then followed by a dedicated tuner output that is buffered in order to eliminate loading on the pickup or noise from the quartz clock. The guitar signal is then passed through a series of carefully sculpted filters to create Radial’s signature JDX tone. This is modelled after the sound of a Shure SM57™ in front of a Marshall™ 4-12 cabinet. The Direct-Drive goes further with two more voicing settings: The first adds a vintage Marshall™ tube head character to the signal path while the second delivers a tone reminiscent of an early Fender Twin™. The two amp tones can be further tailored using a presence switch for extra sparkle. The guitar signal exits the Direct-Drive via either a ¼” guitar-level output or via a balanced XLR to feed the PA. The direct box output is outfitted with a 180° polarity reverse switch to help phase-align monitors with the stage amp along with a ground lift switch to help eliminate hum and buzz caused by ground loops. The Direct-Drive may be powered using a standard 9V power supply or typical pedalboard power brick.
As with all Radial products, the Direct-Drive is made to handle the rigors of professional touring with 14-gauge steel throughout. This not only helps prevent damage to the internal PCB, it also reduces susceptibility to noise from external magnetic fields.
The Radial JDX Direct-Drive… one small step on a pedal board, one huge step for the guitarist!
 
Note: Note the companies mentioned above are not related to Radial and are only referenced in order to give the reader a sense of the type of tone the Direct-Drive will produce at the various voicing settings.
RAD-R800 1432 00
4 Play Multi-Output DI Box
  • Quick change-over DI for multi-instrumentalists
  • Switch between four outputs using a single footswitch
  • Four DI outputs for control over each instrument
  • Ground lift switches to eliminate hum and buzz

 

The 4-Play begins with a standard ¼" input for acoustic guitar, mandolin, fiddle or bass. In fact, it works great on just about any instrument. A mute footswitch lets you silence the switcher when connecting or disconnecting the instrument. The signal is then routed to a selector footswitch that sequentially activates up to four outputs allowing each instrument to have its own dedicated channel on the PA. You simply mute the 4-Play, connect the desired instrument and then use the footswitch to select the output. High visibility LED indicators provide clear visual feedback to let you know which output is active.

 

Radial Tech Team associate Mike Bauer explains: "When you are on a busy stage, switching instruments can pose several challenges. When sharing the same direct box, switching between an acoustic guitar and mandolin requires both the FOH engineer and monitor engineer to mute the active mixer channel in order to avoid damaging plug-in transients and painful pops for the audience. You then need to alter the EQ and adjust the level to adapt it for each instrument. Alternatively, when using separate DI boxes, you end up with a bunch of wires connected to each instrument which often get tangled. Ask any stage tech and they will tell you that the preferred approach is to use a single cable and manually switch between instruments. Then, because the artist can mute the instrument on stage, you avoid having to flag down the FOH and monitor engineers between each changeover. Since each instrument is now connected to a dedicated channel, the signal level, EQ and effects can be predetermined and optimized without having to make radical changes every time an instrument is changed.  With so many auxiliary musicians onstage these days, there has never been a more appropriate time for this type of solution."

 

The 4-Play features four balanced XLR outputs, each of which is equipped with a ground lift switch to help eliminate hum and buzz caused by ground loops. All of the connectors are made from glass-filled nylon for exceptional durability and isolation and feature nickel-silver contacts that will not tarnish over time. Two 'set & forget' switches allow the user to increase the range of the selector footswitch to 2, 3 or 4 outputs. There is also a dedicated tuner out that can be assigned to be always on, or function in tandem with the mute switch for quick on-the-fly adjustments.

 

Built Radial tough, the 4-Play is made from heavy 14-gauge steel for added rigidity and greater rejection of stray magnetic fields. It employs a standard Boss-style 9V power supply (not included) and is equipped with a cable lock to prevent accidental disconnection.

RAD-R800 1026 00
JPC Computer Direct Box
* 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.
RAD-R800 2020 00
FIREFLY Tube Direct Box
* Class-A front end drives 12AX7 tube stage
* Two inputs with separate gain & remote switching
* Drag Control load correction for optimal tone
* Variable high-pass filter to eliminate resonance

The Radial Firefly™ is a high output tube direct box designed for stage and studio. It combines Radial's award winning zero negative feedback class-A front end with the warmth and character of a 12AX7 tube drive circuit and Radial's legendary transformer coupled output.
The Firefly features A and B instrument inputs with easy access level controls to accelerate instrument changes on stage. This enables the artist to switch between two different instruments and deliver a consistent signal to the PA system and on-stage amp. Switching can be done via the front panel or with the optional JR2 remote control. This connects to the Firefly using a balanced cable and adds a mute function for quiet on-stage adjustments.
To optimize performance with electric bass, the Firefly is equipped with Drag Control™ load correction that lets you adjust the load on a magnetic pickup so that it 'feels' as if connected to a tube amplifier. For 'fussy' piezo transducers, Drag can be bypassed to increase the input impedance to 4 meg-ohms to eliminate the squawk and peaks that plague these types of pickups. A fully variable high-pass filter may be dialed in to eliminate low frequency resonance that can cause feedback on stage or muddy sound when recording.
The rear panel sports two stacked ¼" instrument A & B-INPUTS and a THRU output for the on-stage amp. The THRU offers a choice of pre or post tube configuration. Additionally a TRS insert jack enables external effects to be shared between both inputs. A buffered 'always on' tuner output can be used to split the instrument signal in the studio or it can be dedicated to an electronic tuner. The tuner output can be used for silent tuning when the optional JR2 remote is connected. The balanced XLR output is equipped with a ground lift switch to help eliminate buzz and hum caused by ground loops and a 180° polarity reverse to tame feedback hot spots on stage or help phase align the PA system with the on-stage amp. The Firefly may also be rack mounted alone or in pairs by ordering the optional 19" rackmount kit.
The Firefly combines the warmth, character and feel of a vintage tube device with the low noise and performance of today's most advance audio technology.
 
This just in from Nathan East
"The Firefly has changed my life!! My rig is complete now thanks to you! Not only did we get fantastic results in the studio on the new Fourplay CD, but my first Firefly Live gig was Kennedy Center with David Foster, Chaka Khan, Jewel
RAD-R800 2015 00
JDV MK 5 Class-A Super DI box
* 100% discrete class-A active direct box
* Feed forward design – no negative feedback
* Drag™ control load correction for natural tone
* Huge 30-Volt rails for exceptional headroom

The Radial JDV Mk5 is a high performance active direct box and preamp with two inputs that enables the user to seamlessly transition from one instrument to another while being able to optimize the signal chain no matter what the source.
The design begins with 100% discrete electronics and a unique class-A circuit with zero phase-cancelling negative feedback front-end. This is augmented with Drag™ control load correction that lets you optimize the impedance that is being applied to the pickup along with extra rail voltage for an abundance of headroom. The result is virtually zero harmonic, phase and cross-point distortion resulting in the most natural rendering without coloration or artifact of any type.
Central to the design is the JDV's ability to handle any type of instrument. Input-1 is equally well suited for magnetic pickups or active instruments and is equipped with a balanced mic input with 48V phantom to accept instrument-mounted condenser mics. Input-2 adds another dimension with a selectable 10 meg-ohm input to properly load piezo transducers. Both inputs may be active at one time and mixed together using the front panel controls. These can then be phase-aligned using the built-in Radial Phazer for what can only be deemed the most natural sounding reproduction of an acoustic instrument ever.
Extra features include fully variable high-pass filters on each channel to eliminate excessive low frequency resonance, easy-read LED level meters, Jensen Transformer isolated outputs to eliminate hum and buzz caused by ground loops and a +4dB line level output for direct recording. Switching between channels may be done using a front panel switch or via the optional JR-2 remote control.
The Radial JDV Mk5... the only DI you will never hear!
RAD-R800 1300 00
J33 Turntable Direct Box
* Combination RIAA Phono preamp and DI box
* Stereo RCA, ¼" TRS, 3.5mm and XLR outputs
* Built -in low frequency rumble filter
* Choice of 48V phantom or DC supply

The Radial J33 is a combination phono preamplifier and purpose built stereo direct box made to handle the rigors of the professional recording studio and the abusive environment of live touring. But don't let the tough exterior fool you… the J33's sonic performance will easily surpass many audiophile preamps costing much more.
Designed specifically for dynamic cartridges, the J33 begins with a low noise front end. Inputs are standard RCA with the required turntable ground lug. A precise RIAA low pass filter is tailored to produce a smooth, warm response. The signal is then buffered to provide the audio system with a standard -10dB signal with choice of RCA connectors for compatibility with home HiFi entertainment systems, 3.5mm (1/8") output to feed a laptop or iPod, or a stereo TRS ¼" jack for an audio recorder. A second set of direct box XLR outputs deliver a mic level signal to feed a concert snake, mic splitter and mixing desk preamp inputs. A rumble filter is also available for high sound pressure environments to reduce bothersome resonant feedback.
As with all Radial DIs, the J33 features a 14 gauge steel enclosure with a unique book-end design that creates a protective zone around the switches and connectors. The internal I-Beam construction ensures maximum rigidity while ensuring minimal stress on the sensitive solder joints. These combine to provide exceptional shielding against noise while ensuring greater dependability in the most demanding environments.
The Radial J33, a high performance turntable preamp that is ideally suited for music playback, archiving, DJing and sampling.
RAD-R800 7054 00
* Combination speaker attenuator and simulator
* Safely handles up to 130 watts RMS (180 peak)
* Radial JDX Reactor and Phazer for direct recording
* Delivers great tone from your amp at low volume

The Headload is a combination load box and attenuator that is capable of handling up to 130 watts RMS of continuous power and peaks of 180 watts. Inserted between the head and cabinet, it allows the guitar amp to be driven hard while reducing the output level to reduce the sound pressure on stage or provide the means for quiet recording in the studio. This enables the artist to optimize the tone from the guitar amplifier without having to perform at ear-blistering levels.
The 100% discrete fan-cooled design begins with a series of cement encrusted, epoxy coated copper resistor coils that are controlled via a 6-position rotary switch to set the desired power reduction from 100% down to 20%. A trim control provides fine adjustment when below 20%. The Headload output can be turned off for quiet on-stage use, recording or when practicing using the built-in headphone amplifier.
In order to ensure greater consistency from gig to gig, the Headload is equipped with a Radial JDX Reactor direct box. This captures both the signal from the head plus the reactive load from the speaker cabinet for a more natural tone. The JDX has gained tremendous popularity with users as diverse as Megadeth, Aerosmith, Rascal Flatts, Sting and Radiohead. For engineers that prefer to combine a direct feed with a microphone, the Headload has also been equipped with a Radial Phazer – phase adjustment tool. This lets you time-align the JDX direct feed with the microphone to deliver incredibly natural tones, or when pushed to extreme, create over the top effects. The JDX direct output may also be tailored to suit with a 6 position voicing switch to select from various cabinet emulation presets and fine tuned using a 2-band EQ to tame overly bright amps.
Available now in 4, 8 and 16 ohms, the Headload is quite likely the most useful load box ever made.
RAD-R800 7058 00
HEADLOAD V8
* Combination speaker attenuator and simulator
* Safely handles up to 130 watts RMS (180 peak)
* Radial JDX Reactor and Phazer for direct recording
* Delivers great tone from your amp at low volume

The Headload is a combination load box and attenuator that is capable of handling up to 130 watts RMS of continuous power and peaks of 180 watts. Inserted between the head and cabinet, it allows the guitar amp to be driven hard while reducing the output level to reduce the sound pressure on stage or provide the means for quiet recording in the studio. This enables the artist to optimize the tone from the guitar amplifier without having to perform at ear-blistering levels.
The 100% discrete fan-cooled design begins with a series of cement encrusted, epoxy coated copper resistor coils that are controlled via a 6-position rotary switch to set the desired power reduction from 100% down to 20%. A trim control provides fine adjustment when below 20%. The Headload output can be turned off for quiet on-stage use, recording or when practicing using the built-in headphone amplifier.
In order to ensure greater consistency from gig to gig, the Headload is equipped with a Radial JDX Reactor direct box. This captures both the signal from the head plus the reactive load from the speaker cabinet for a more natural tone. The JDX has gained tremendous popularity with users as diverse as Megadeth, Aerosmith, Rascal Flatts, Sting and Radiohead. For engineers that prefer to combine a direct feed with a microphone, the Headload has also been equipped with a Radial Phazer – phase adjustment tool. This lets you time-align the JDX direct feed with the microphone to deliver incredibly natural tones, or when pushed to extreme, create over the top effects. The JDX direct output may also be tailored to suit with a 6 position voicing switch to select from various cabinet emulation presets and fine tuned using a 2-band EQ to tame overly bright amps.
Available now in 4, 8 and 16 ohms, the Headload is quite likely the most useful load box ever made.
 
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RAD-R800 7056 00
* Combination speaker attenuator and simulator
* Safely handles up to 130 watts RMS (180 peak)
* Radial JDX Reactor and Phazer for direct recording
* Delivers great tone from your amp at low volume

The Headload is a combination load box and attenuator that is capable of handling up to 130 watts RMS of continuous power and peaks of 180 watts. Inserted between the head and cabinet, it allows the guitar amp to be driven hard while reducing the output level to reduce the sound pressure on stage or provide the means for quiet recording in the studio. This enables the artist to optimize the tone from the guitar amplifier without having to perform at ear-blistering levels.
The 100% discrete fan-cooled design begins with a series of cement encrusted, epoxy coated copper resistor coils that are controlled via a 6-position rotary switch to set the desired power reduction from 100% down to 20%. A trim control provides fine adjustment when below 20%. The Headload output can be turned off for quiet on-stage use, recording or when practicing using the built-in headphone amplifier.
In order to ensure greater consistency from gig to gig, the Headload is equipped with a Radial JDX Reactor direct box. This captures both the signal from the head plus the reactive load from the speaker cabinet for a more natural tone. The JDX has gained tremendous popularity with users as diverse as Megadeth, Aerosmith, Rascal Flatts, Sting and Radiohead. For engineers that prefer to combine a direct feed with a microphone, the Headload has also been equipped with a Radial Phazer – phase adjustment tool. This lets you time-align the JDX direct feed with the microphone to deliver incredibly natural tones, or when pushed to extreme, create over the top effects. The JDX direct output may also be tailored to suit with a 6 position voicing switch to select from various cabinet emulation presets and fine tuned using a 2-band EQ to tame overly bright amps.
Available now in 4, 8 and 16 ohms, the Headload is quite likely the most useful load box ever made.
RAD-R800 1170 00
Stage Direct Active DI with footswitch mute & tuner out
* Active DI with footswitch mute & tuner out
* Silently switch instruments on stage without noise
* Eliminates feedback when instrument is not in use
* Remote control lets stage tech perform switching

The Radial StageDirect is a state-of-the-art active direct box designed for musicians who require extra control when they are on stage. As with most DIs, the StageDirect is equipped with a hi-Z input for the instrument, a thru-put for the stage amplifier and a balanced low-Z output for the PA system. The 'extra' comes by way of a dedicated tuner output and footswitch that mutes the signal going to the PA and stage amplifier while leaving the tuner output active. This enables the artist to mute the guitar when not in use or quietly tune in between songs.
The innovative circuit design combines a class-A FET input driver with a low noise op-amp to deliver exceptional audio at all frequencies. A -15dB pad may be inserted for extra high output instruments such as active bases or electronic keyboards. Engaging the high-pass filter gently rolls off excessive bass to eliminate clutter and run-away resonant feedback. A 180° polarity reverse switch can be used to help phase align the on-stage amp with the PA or eliminate acoustic 'hot spots' on stage by electronically moving the problem out of the way. A pair of full-sized LEDs let you know when the StageDirect is muted or ready to perform. Switching is done locally using the footswitch or may be remotely controlled by connecting a momentary (non-latching) footswitch to the dedicated ¼" connector. This enables the stage tech to mute the instrument as he hands the guitar to the artist and un-mute it as he walks off stage. Powering may be done via standard 48V phantom from the mixing console or by using the included 15VDC power supply.
Equally effective for acoustic guitar or bass, the StageDirect works as an extra stage hand by enabling the artist to change instruments without causing switching noise in the PA system.
The Radial StageDirect – Extra control is just a footstep away!
RAD-R800 7060 00
Headload Prodigy Combination load box and DI
* Load box with 100%, 50% and silent attenuation
* Let's you drive your amp hard for best tone
* JDX Reactor direct output for PA and monitors
* Built-in headphone amp for practicing

The Headload Prodigy™ is a combination load box and DI that lets you drive your guitar amp at a higher output in order to maximize the tone, yet produce a lower stage volume when needed.
Like the larger Headload™, the Prodigy employs custom made cement-encrusted ceramic-coated resister coils to convert the excessive power from the amplifier to heat and is able to comfortably withstand up to 100 watts RMS. The Prodigy may be used in three different ways, depending on the need: First, it may be used as a direct box via the built-in Radial JDX Reactor. The hugely popular JDX combines a reactive load with a proprietary filter bank to emulate the tone of a 4 x 12 half stack. This features 100% discrete class-A circuitry for optimal tone and transformer isolation to eliminate hum and buzz caused by ground loops. Designed to replace a microphone, the JDX delivers greater consistency while eliminating concerns such as stage resonance, bleed from other instruments and problematic room acoustics which can play havoc on the tone.
Second, the Prodigy may be used as a load box where you can attenuate the output from 100% down to 50% to drive your amp harder while keeping the volume down to a comfortable level. Finally, the prodigy can be used without a speaker cabinet for completely silent recording. This is particularly useful in small venues where the speaker cabinet on stage may conflict with the sound in the room. It is also great for silent recording where you want to take advantage of 'high power' amp distortion without upsetting the neighbours.
In order to optimize the playing experience for in-ear monitors, a dual band EQ lets you optimize bass and treble settings. Two additional ¼" outputs enhance connectivity: The first is direct from the amp while the second is post EQ - post JDX. These are used to feed additional amplifiers or effects and adjusted using the front panel level control. A second level control is used to adjust the built-in headphone amplifier for silent practicing.
Housed in 14-gauge steel to help keep magnetic radiation at bay, the Headload Prodigy features a handy carry handle plus Radial's unique book-end design that creates a protective zone around the switches and controls. The internal I-beam construction adds tremendous rigidity, protecting the sensitive PC board from being torqued which could lead to solder joints going cold prematurely. One or two Prodigies may be rack-mounted into a single 19" rack space using an optional rack kit and power is supplied by an external 15VDC supply with a cable clamp to prevent accidental disconnection. Available in the 8 ohm model.
The Headload Prodigy… a load box made to deliver a load of tone!
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