- PASSIVE DI
The Radial JDI is a warm sounding passive direct box that can transfer extreme signal levels without distortion while eliminating hum and buzz caused by ground loops.PRODI
The Radial ProDI is a high performance passive direct box that is ideally suited for bass and acoustic guitar to deliver a warm, distortion-free sound.Trim-Two
The Radial Trim-Two is a passive direct box, designed for use with laptop computers and other consumer type devices where the user has a requirement for a 'ready access' volume control for quick adjustments on stage.JDI Stereo
The Radial JDI Stereo is a passive stereo direct box designed to handle extreme signal levels without distortion of any kind.PROD2
The Radial ProD2 is a high performance stereo direct box designed to easily interface keyboards to the PA and recording system without noise.StageBug SB-2
The Radial SB-2 is a passive direct box designed for keyboards and active bass. Features stereo to mono mix function to save mixer channels.JDI Duplex
The Radial JDI Duplex is a stereo passive direct box that fully capable of handling any audio signal without distortion, artefact or noise.ProAV1 & PROAV2
The Radial ProAV is a passive direct box with stereo-to-mono merge function designed specifically for the audio-video integrator to reduce channel requirements.StageBug SB-5
The Radial StageBug SB-5 is a compact stereo direct box designed to accommodate laptop computers, tablets and other consumer audio products when amplifying the signal through a PA system.JD6
The Radial JD6 is a 6-channel rackmount direct box designed for keyboards in studio and live touring where optimal signal transfer is required without noise.ProD8
The Radial ProD8 is a high density 8-channel rackmount direct box optimized for professional keyboard rigs where optimizing signal transfer without noise is needed.StageBug SB5W
The Radial SB5-W is a passive stereo direct box designed to fit inside a standard electrical wall box and utilizing a Decora wall plate cover.
- ACTIVE DI
The Radial Firefly is a class-A direct box that combines a 12AX7 tube drive with transformer isolation to deliver spectacular warmth and character.J48
The Radial J48 is a 48 volt powered active direct box that delivers studio quality performance while eliminating hum and buzz caused by ground loops.JDX 48
The Radial JDX 48 is a guitar amp DI that captures the sound of the amplifier and speaker to deliver the tone of a 4x12 half-stack without the need of a microphone.USB-Pro
The Radial USB-Pro is a high-resolution DI box that converts sound files from a laptop and seamlessly transfers them to a pair of balanced audio outs.JDV MK5
The Radial JDV is a class-A direct box with a unique zero negative-feedback circuit that delivers unmatched signal purity for the most demanding recordings.J48 STEREO
The Radial J48 Stereo is a high performance active direct box with extra headroom and advanced grounding for professional touring and studio recording.PZ-DI
The Radial PZ-DI is a unique direct box that is specifically designed for acoustic and orchestral instruments.JPC
The Radial JPC is an active stereo DI with transformer isolated inputs to eliminate noise that is common with computers and consumer audio devices.Headload
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.PRO48
The Radial Pro48 is a high performance active direct box that is ideally suited for bass and acoustic guitars to deliver clarity without distortion or artifact.StageDirect
The Radial StageDirect is a state-of-the-art active direct box designed for musicians who require extra control when they are on stage.J33
The Radial J33 is a combination stereo phono preamp and direct box designed to interface turntables to professional audio systems.Headload Prodigy
The Headload Prodigy is a combination load box and DI that lets you perform or record at low volume with maximum tone.StageBug SB-1
The Radial SB-1 is an ultra-compact active direct box designed for acoustic guitar and bass that fits inside a guitar case!StageBug SB-4
The Radial StageBug SB-4 is a compact active direct box that has been optimized for use with piezo transducers.BT-Pro
BT-Pro™ is a Bluetooth® DI designed to capture the wireless transmission from a Bluetooth® device and convert the signal to a balanced line for use in a PA.JDX Direct-Drive
The Radial™ JDX Direct-Drive is a unique and powerful device that simulates the sound of a guitar amplifier.4-Play
The Radial 4-Play™ is a multi-channel direct box that has been specifically developed for multi-instrumentalists to enable them to quickly change instruments on stage.
The Radial X-Amp is a dual output class-A active Reamper that lets you take a pre-recorded track and send it through amps and pedals without noise.Reamp JCR
The Radial Reamp JCR is a high-performance passive Reamper that lets you take a pre-recorded track and send it through a guitar amp or pedal chain without noise.ProRMP
The Radial ProRMP is a passive Reamper that lets you take a pre-recorded track and send it through a guitar amp or pedal chain without noise.X-Amp 500 Series
The Radial X-Amp is a 500 series class-A active Reamper with isolated outputs that lets you send a pre-recorded track to two amps and re-record the new sound.Reamp KIT
The Reamp Kit combines a Radial J48 direct box for recording with a Radial X-Amp for Reamping amps & pedals to enhance the tone of your recorded tracks.SGI
The Radial SGI Studio Guitar Interface class-A line driver with load correction lets you send a guitar signal beyond 100 meters via balanced cable without noise.JD7
The Radial JD7 Injector is a class-A guitar distro/splitter with built-in Radial DI and Reamp that can drive up to seven amps or pedal chains simultaneously.JX44
The Radial JX44 Air Control is a wireless signal manager for concert stage that lets you remotely control 4 guitar inputs and 6 amp outputs at once.SGI-44
The Radial SGI-44 guitar interface is a balanced signal extender designed to send the signal from a wireless receiver to the pedalboard and back to the stage amp.
JS2 / JS3
The Radial JS2 and JS3 are high performance passive microphone splitters that lets you feed mixing consoles without signal degradation or noise caused by ground loops.PRO-MS2
The Radial ProMS2 is a high performance mic splitter that accepts a balanced microphone signal and sends it to three outputs simultaneously. As a passive device, there is no need for power.OX8
The Radial OX8 is an 8-channel rack mounted microphone splitter that lets you feed two mixing consoles without signal degradation or noise caused by ground loops.LX8
The Radial LX8 is an 8-channel rack mounted line level splitter that lets you feed two audio systems without signal degradation or noise caused by ground loops.JD7
The Radial JD7 Injector is a class-A guitar distro/splitter with built-in Radial DI and Reamp that can drive up to seven amps or pedal chains simultaneously.JX44
The Radial JX44 Air Control is a wireless signal manager for concert stage that lets you remotely control 4 guitar inputs and 6 amp outputs at once.mPress
The Radial mPress is a modular press box that can be expanded as needed to feed a community-sized press gallery or distribute audio for an international event.Exo-Pod
The Radial Exo-Pod is a passive broadcast splitter that can take the balanced line output from a mixing console and distribute the signal to 14 hand-held recorders, video cameras or wireless receivers.Catapult
The Radial Catapult is a 4-channel audio snake that lets you send analog or AES digital audio signals over standard Cat 5 or Cat 6 shielded twisted pair cable.LX-2
The Radial LX-2™ is a passive balanced line level audio splitter that allows you to easily send an audio signal to two different destinations at once without noise.LX-3
The Radial LX-3™ is a high-performance balanced line-level splitter designed to send one audio signal to as many as three destinations at once.
The Radial Twin-Iso is a two channel balanced line-level isolator that eliminates the hum and buzz caused by ground loops that is often encountered in audio systems.J-ISO
The Radial J-ISO & Pro-Iso are full bandwidth stereo interfaces that converts +4dB balanced line level signals to an unbalanced consumer level output.Pro-ISO
The Radial J-ISO & Pro-Iso are full bandwidth stereo interfaces that converts +4dB balanced line level signals to an unbalanced consumer level output.J+4
The Radial J+4 is a -10dB to +4dB stereo preamp that lets you boost a low output unbalanced signal and interface it with a balanced professional audio system.JPC
The Radial JPC is an active stereo direct box with transformer isolated inputs to eliminate noise that is common with computers and consumer audio devices.McBoost
The Radial McBoost™ is a high performance microphone signal booster designed to elevate the output of a typical dynamic microphone for greater transient response.SGI
The Radial SGI Studio Guitar Interface class-A line driver with load correction lets you send a guitar signal beyond 100 meters via balanced cable without noise.SGI-44
The Radial SGI-44 guitar interface is a balanced signal extender designed to send the signal from a wireless receiver to the pedalboard and back to the stage amp.STAGEBUG SB-6
The Radial StageBug SB-6 is a high performance 2-channel passive audio isolator designed to accommodate both balanced and unbalanced signals.STAGEBUG SB-7
The Radial StageBug SB-7 Earmuff Headphone Silencer lets you turn off one side of your headphones to stop the bleed.STAGEBUG SB-15
The Radial Stage Bug SB-15 High Performance Signal Buffer lets you drive guitar pedals without added noise and also powers 15V Tonebone pedals.ICECUBE IC-1
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.DECODER
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 consoleSpace Heater
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.Twinline
The Radial Twinline is a unique device that enables a guitarist to share effects pedals between two amps when using the amplifiers' built-in (rear-panel) effects loops.MR5
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.
Radial studio products simplify the work-flow without affecting the signal quality to ensure creativity is not hampered during production.MC3
The Radial MC3 monitor controller is a 'straight wire' passive switcher that lets you control two sets of monitors, sub woofer and feed two sets of headphones.Gold Digger
The Gold Digger is a 4-channel mic selector that enables the engineer to quickly compare the sound of four different microphones while sharing the same preamp.Cherry Picker
The Radial Cherry Picker is a unique tool that simplifies the process of selecting the best preamp for use with a given microphone.
Guitar / Amplifier
Whether switching guitars on stage or amps in the studio, Radial offers a complete range of switchers from simple ABYs all the way up!JD7
The Radial JD7 Injector is a class-A guitar distro/splitter with built-in Radial DI and Reamp that can drive up to seven amps or pedal chains simultaneously.JX-42
The JX-42 is a compact guitar selector that lets you instantly switch between four guitars and two amps on stage.JX62
The Radial JX62 is a guitar and amp switcher designed for both wired and wireless guitars in a live concert touring environment.jx44
The Radial JX44 Air Control is a wireless signal manager for concert stage that lets you remotely control 4 guitar inputs and 6 amp outputs at once.JR5
The JR5 is a remote footswitch that lets you select guitars, amps or effects when used with the JX44 and JX42.JR2
The JR2 is a dual function remote footswitch that lets you switch or mute outputs, depending on the Radial device that is connected.BIGSHOT ABY
The Radial BigShot ABY is a true-bypass ABY switcher that toggles or combines two guitar amplifiers in phase and without hum & buzz caused by ground loops.BigShot I/O
The Radial Bigshot I/O is a true-bypass instrument selector that lets you switch between two sources and balance the signal level between them.BigShot EFX
The Radial BigShot EFX is a true-bypass effects loop switcher that lets you turn on or off two pedal-chains and take them out of the signal path when not in use.BigShot SW2
The Radial BigShot SW2 is a dual output remote control with choice of latching or impulse settings to control two amplifiers or effects.Twinline
The Radial Twinline is a unique device that enables a guitarist to share effects pedals between two amps when using the amplifiers' built-in (rear-panel) effects loops.
Radial addresses the fast paced world of live touring with a range of switchers for backing tracks, wireless systems and mixers.Relay Xo
Radial Relay Xo is a 1-in, 2-out switcher for balanced audio used with mic or line level sources as talkback and communication router.SW4
The Radial SW4 is a four channel balanced audio switcher designed for wireless systems, mixing consoles and digital guitar processors.SW8
The Radial SW8 is a backing track switcher that automatically switches between two playback systems to prevent disaster during a live performance.HotShot DM-1
The Radial HotShot DM-1 is a combination mic mute and switch that enables the artist to communicate to band members and techs via momentary footswitch.HotShot ABi
The Radial HotShot AB1 is an XLR balanced input selector that can instantly toggle between two input sources to one output via a latching footswitch.HotShot ABo
The Radial HotShot ABo is an XLR balanced output selector that can instantly toggle one input between two output destinations via a latching footswitch.JR2
The JR2 is a dual function remote footswitch that lets you switch or mute outputs, depending on the Radial device that is connected.JR2-DT
The JR2-DT is a desk-top version of the JR2. It features two top-mounted activator switches to control AB and Mute functions.BigShot SW2
The Radial BigShot SW2 is a dual output remote control with choice of latching or impulse settings to control two amplifiers or effects.
The Radial Phazer is an analog phase alignment tool that lets you combine two sources and bring the fundamentals together for a more natural tone.Phazer Bank
The Radial Phazerbank is a 4-channel analogue phase adjustment tool that enables the engineer to effortlessly adjust the phase between two microphones when double mic'ing a single source.PhazeQ
The Radial PhaseQ is 500 series phase alignment tool that lets you combine two microphones and bring them into perfect phase for a more natural tone.EXTC-SA
The Radial EXTC-SA™ is a stand-alone audio interface that lets you incorporate guitar effects into the realm of pro-audio recording.EXTC
The Radial EXTC is a 500 series effects send & receive module that lets you incorporate guitar effects into the realm of pro-audio recording.Tank Driver
The Radial Tank Driver is a wonderfully unique 500 series module that allows you to drive a balanced line level signal through the reverb tank in your Fender Twin amp!Vocoloco
The Voco-Loco is a foot-controlled effects loop that enables the lead vocalist, sax or trumpet player to incorporate guitar effects pedals into the signal path, just like an electric guitarist adds effects for soloing.Trimode
The Trimode tube distortion takes you from slight overdrive to full-on distortion. Think Mesa-Boogie in a pedal and switch instantly from rhythm to lead.Vienna Chorus
The Vienna Chorus is vintage bucket-brigade chorus that delivers old-school analog tone. Dual-mode controls lets you switch from slow to fast choral effects like a Leslie.
- 500 SERIES
Choose between Radial's award-winning racks for ultimate control over your signal path. Compatible with all 500 series modules, Radial racks are equipped with extra features for greater connectivity plus resettble electronic fuses to keep your gear safe!Workhorse
The Radial Workhorse is an 8-slot 500 series power rack with a built-in analog summing mixer, headphone amp and extensive patching capabilities.WR8
The Radial WR-8 is an 8-slot power rack that lets you load up to eight 500 series modules. Can be expanded with the WM8 mixer for full Workhorse capabilities.Powerhouse
The Radial Powerhouse is a 10-slot power rack for 500 series modules designed to provide maximum density for professional studio setups.SIXPACK
The Radial SixPack is a desk-top 6-slot power rack for the popular 500 series, designed to create the ultimate channel strip with 1600 milliamps of available current.Cube
The Radial Cube is a desk-top 3-slot power rack for the popular 500 series, designed to create the ultimate channel strip with 500 milliamps of available current.PowerStrip
The Radial Powerstrip is a 3-slot power rack for the popular 500 series, designed to create the ultimate channel strip with 500 milliamps of available current.
Preamps & EQs
Radial gives you a choice between tube and solid state preamps to suit your most demanding recording needs. Compliment them with choice of induction coil or discrete class-A equalizers to add creative soul, sparkle or fat bottom end.POWERPRE
The Radial PowerPre is a 500 series 100% discrete mic preamp with Accustate input control for low noise and transformer coupled output for added warmth.JDV-PRE
The Radial JDV-Pre is a 500 series class-A instrument preamp with variable load for magnetic, piezo and active sources and high-pass filter to eliminate resonance.PowerTube
The Radial Powertube is 500 series 100% discrete class-A preamp with high voltage 12AX7 tube gain stage and transformer coupled input for vintage character.Premax
The Radial PreMax is a 500 series channel strip tha combines a state-of-the-art preamp with a 3-band EQ for easy signal manipulation in post production and recording.Q3
The Radial Q3 is a 500 series induction coil EQ that brings the character and excitement of old-school vintage EQ to your recordings with over 1700 EQ curves.Phaze-Q
The Radial PhaseQ is 500 series phase alignment tool that lets you combine two microphones and bring them into perfect phase for a more natural tone.Twin-Servo
The Radial Jensen Twin-Servo & 500 series preamplifier is an updated version of what may well be the most spectacular preamp ever made.PreComp
The Radial PreComp is a 500 series channel strip that combines a state-of the-art preamp with a full-function VCA compressor for dynamic control over the signal.Q4
The Radial Q4 is a 500 series state-variable, 100% discrete class-A parametric EQ that brings character and warmth to your recordings with minimal artifact
Effects & Routing
The 500 series is all about creative use of signal processing. Radial opens the door with compressors, signal routers, cross-over filters, effects interfaces, phase alignment tools and amp simulators. Finally… amazing tools that let your imagination run wild!EXTC
The Radial EXTC is a 500 series effects send & receive module that lets you incorporate guitar effects into the realm of pro-audio recording.Shuttle
The Radial Shuttle is a 500 series patch and insert panel that lets you bring balanced and unbalanced signals in and out a 500 series power rack.Komit
The Radial Komit is a 500 series one-knob compressor-limiter designed to get great results instantly and add crunch and distortion for unque effects.X-Amp
The Radial X-Amp is a 500 series class-A active Reamper with isolated outputs that lets you send a pre-recorded track to two amps and re-record the new sound.ChainDrive
The Radial ChainDrive is a 500 series signal distribution amplifier that lets you send balanced or unbalanced signals to four outputs and control them independently.Tank Driver
A unique module that lets you to drive a balanced line level signal through the reverb tank in your Fender Twin! Drive spring reverbs of all types and deliver the long trailing shimmering effect that is only possible with a true spring.JDX-500
The Radial JDX Reactor is 500 series guitar amplifier interface that lets you capture the tone of a guitar amp and cabinet without a microphone.Submix
The Radial SubMix is a 500 series mixer that lets you combine 4 instruments such as keyboards or effects into a single audio channel via front panel controls.Tossover
The Radial Tossover is a 500 series frequency divider that lets you separate and process low and high frequencies separately via fully variable controls and slopes.
- CABLES & SNAKES
PZ-DI Using & Applications
The Radial PZ-DI is designed to provide maximum flexibility while being 'plug & play' easy to use. The following page describes the primary functions. For more details, we invite you to download the full manual by clicking on the icon at left.
Like all direct boxes, the PZ-DI's primary function is to enable unbalanced high-impedance instruments to be properly interfaced with the low-impedance balanced inputs employed both in live sound touring and in the recording studio. Balancing the signal enables it to travel long distances without noise. Where the PZ-DI excels is in its ability to instantly adapt to various types of pickups, transducers or instruments to improve the frequency response, increase dynamics, and produce a warmer more natural sound.
Connections to and from the PZ-DI are straight forward: The instrument connects to the INPUT using a standard ¼" cable. If a stage amp is being used, the THRU is used to feed the amp. The XLR output is used to connect to the PA system or recording console. Powering the PZ-DI is done via 48 volt phantom power from the console. There is no power switch. As soon as you connect the XLR and turn on phantom power, it will go on and a 48V LED will illuminate. Always ensure level controls are turned down or off before making connections as this will protect more sensitive audio components like tweeters from turn-on transients that could cause damage.
Selecting the right impedance
Following the block diagram, the PZ-DI begins with a 3-position LOAD switch that lets you select the appropriate input impedance to match the source:
- Traditional 1 meg-ohm for reduced loading
Ever since Leo Fender built his first tube amplifiers with a 1 meg-ohm input impedance, the industry has followed suit. 1 meg-ohms delivers a good clean signal that can be used with most instruments and will not excessively load a magnetic pickup which can cause lower output instruments to sound flat.
- Warm sounding 220k-ohm for magnetic pickups
Solid state circuits sound very different that tube amps. In fact, after much listening, we have come to the conclusion that a 220k-ohm load on a solid-state circuit tends to sound very much like a 1 meg-ohm input on a tube amplifier circuit. This sounds warmer than 1 meg-ohm with most magnetic pickups.
- 10 meg-ohm for piezo transducers
Most engineers find that that piezo transducers tend to sound peaky and edgy. This is because they are usually paired with a 1 meg-ohm input impedance. The PZ-DI lets you increase the impedance to 10 meg ohms which immediately smoothes out the sound and extends the frequency response.
When using the PZ-DI with an active source, since the signal is already buffered by the instrument's built-in electronics, changing the input impedance will have little or no effect. For instruments that have exceedingly loud output signals such as active basses or digital keyboards, engaging the -15dB pad will enable the PZ-DI to be used without fear of distortion.
Using the filters
There are two audio filters on the PZ-DI. A variable high-pass filter (HPF) that cuts bass, allowing the highs to pass and a low-pass filter (LPF) that cuts highs to allow lows and mids to pass. The variable high-pass filter performs two functions: In the studio it is used to 'size the instrument' whereby low frequencies that may cause interference or modulation with other instruments can be removed to produce a cleaner signal path. It also serves double duty by helping eliminate unwanted resonance that can cause acoustic feedback on stage. Start by setting the dial completely counter-clockwise and then slowly turn clockwise as you listen.
The LPF (low-pass filter) is used to tame overly bright instruments, in particular those that employ active circuits as part of their signal path. The LPF gently rolls off the high end to produce a smoother, warmer tone.
There are two functions built into the PZ-DI that can help reduce feedback: The first is the variable low cut filter. This is used to eliminate excessive low frequencies that can interact with the PA system to cause the instrument to resonate and then 'feed-back'. One simply dials up the HPF filter to suit.
The other is the 180ᵒ polarity reverse switch. Reversing the polarity changes the relative phase of the XLR output by toggling pins 2 and 3. This can be very helpful at eliminating feedback: When an artist is using an amp on stage, the sound from the stage amp and the sound coming from the PA may combine at certain frequencies to cause feedback. Reversing the polarity of the signal going to the PA can often move the problem out of the way. This can also have a similar effect on the room acoustics. By reversing the polarity, you are in fact causing frequency dips to occur where certain frequencies previously were amplifying each other. Best of all, you are reducing feedback without a tone-altering EQ.
Using an amplifier
If you are using an on-stage amplifier for personal monitoring, use the THRU to make this connection. This is basically a pass-through that takes the original signal and feeds it to your amp.
Side access Buffer Thru ON switch
The PZ-DI features a side access buffer ON ‘set & forget’ switch that allows the thru-put connector to be used two ways.
When OFF (out position) the direct signal from the source instrument is sent thru to the amp. This setting is typically used with an active instrument such as an acoustic guitar or passive instrument such as a bass where you do not want to ‘amplify’ the signal before it reaches the stage amp. This sends the original ‘dry’ signal from the instrument without the buffer.
When on (in position), the signal is buffered (or amplified) before it is sent to the thru-put connector. This is typically used when the source is a piezo transducer and the buffered signal at the thru-put will benefit the stage amp with a more appropriate output. Buffering the signal also allows longer cable runs with less noise.