- 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
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- Active DIs >
For years, folks have been asking Radial to build a tube direct box. What we did not want to do was simply put something in a box. Instead, we wanted to make a statement. Radial users have very high expectations, so our version of a tube direct box not only had to look and sound great, it had to be equipped with a solid feature set so that it could be used in the studio or taken out on the road. And it had to perform like a world class racing car.
Delivering absolute purity
Ask any audiophile and they will tell you that discrete class-A circuits are the most natural sounding. This is because class-A circuits employ a single full wave amplifier to do the work while class AB amplifiers split the waveform and amplify each section separately. Although more efficient, class-AB circuits necessitate combining the two waves together after they are amplified which invariably introduces zero-cross distortion.
As for efficiency, since we are not building a high powered amplifier, the Firefly is nowhere near as demanding. Thus using more energy to deliver the very best audio quality is a trade-off we feel is duly justified.
One of the most exciting attributes that sets the Radial JDV Super-DI direct box apart is the zero negative feedback (ZNF) circuit design. For years, design engineers have been trying to eliminate negative feedback as a means to 'free' the audio circuit from any form of phase cancellation. Negative feedback is used to stabilize the audio circuit to avoid run-away. The JDV employs some innovative thinking to get around the problem and this same front end circuit design has been implemented into the Firefly.
Adapting to all types of pickups
Next on the list was making sure that the Firefly could be used with any instrument in any situation. The most common pickups used today are magnetic such as those found on a traditional Fender bass, Gibson electric guitar or the type that fit into the sound hole of an acoustic guitar. Next in line are the active systems that are found in many acoustics or in today's active basses. And last but not least is the piezo transducer. This is often coupled with an active preamp such as on an upright bass or simply wired to the output jack as a means to save the instrument's natural acoustic properties or vintage value.
Magnetic pickups are basically electro-magnetic transducers that work very much like an audio transformer. When placed inside an electrical circuit they react differently depending on what they are connected to. This is why most musicians find that when they put a preamp (buffer) in between their magnetic pickup and the amplifier, it changes the tone. To solve the problem, Radial invented Drag Control load correction. This allows the user to adjust the load on the pickup so that the guitar or bass sounds as if connected to a tube amplifier. Active instruments combine a pickup with some sort of built-in preamp. Since the pickup is buffered inside the instrument, the Drag Control has no effect and it will simply be ignored when used with an active bass, acoustic guitar or synthesizer.
Although hard to believe, piezo transducers can actually sound amazing. Most musicians complain that they squawk or sound peaky when played hard. This is not so much the fault of the pickup, but the input impedance of the device they are connected to. When the input impedance is too low, they get all whacked out. Piezo transducers work best when presented with a very high input impedance. We designed the Firefly so that you when you bypass the Drag Control, the impedance jumps to 4 meg ohms, smoothing out the transients and peaks. The reason manufacturers avoid a high input impedance is that high impedance circuits tend to be very noisy... unless very carefully designed.
The Firefly Tube Drive
Before building the final prototype, we tested a variety of tubes. We looked at sourcing old discontinued tubes from the 1950s and looked at some of the ultra expensive esoteric tubes that are used in hi-fi systems. In both cases, we found ourselves asking how the musician on stage would deal with replacing tubes on the road or simply finding one 20 years from now. We decided instead to go with a standard 12AX7.
Although not perfect, the 12AX7 is by far the most popular tube made today. It is used in 99% of all guitar amplifier designs making it the one tube you can be sure to find. The only real challenge with the 12AX7 is keeping it quiet. To do this, we sourced a custom power supply that would provide sufficient voltage to the heaters and then made sure that the electronics around the tube were as quiet as could be.
Transformer coupled output
Radial singlehandedly brought passive DI boxes back in vogue. 15 years ago, the passive DI box had lost favour to the active counterparts due to the low quality transformers that were typically used. These cheap transformers gave passive DI boxes a bad name. By combining a laminated nickel core with ultra thin scatter winding techniques and a MuMETAL® shell, the quality of the signal improved dramatically. Today, Radial transformer based DI boxes are used by many of the world's top artists on stages and in studios around the globe.
Transformers are amazing devices. They do not distort like an active circuit... they saturate. This means that that act like a very subtle limiter producing a smoothing or rounding effect to the transient peaks. And because transformers block DC current, they inhibit stray DC currents from flowing around which can cause various pieces of equipment to interact. This often produces the hum or buzz commonly known as a ground loop. By incorporating a Radial transformer on the output of the Firefly, you benefit from a smoother tone with less noise.
Maximizing the functionality on stage and in the studio
The first Firefly prototype had two inputs. Radial staff member, Phil Coelho, suggested that the idea of having two inputs is great, but in order to effectively switch instruments on stage, separate volume controls for each instrument would be ideal. This way, the signal levels going to his amp could be balanced.
We then thought it would be cool to add a remote control. The JR2 was developed for this purpose 'borrowing' some switching technology that was used on some of the early Forest guitar amps. The cool thing about the JR2 is that it does not require any power. The power is remotely fed to the JR2 via a balanced audio cable which then sends a pulse back to the Firefly. Back then, the Forest amp used two switches: one to control channel changes, the other to turn on the reverb. We reallocated the switching so that one selected the inputs and chose to use the other to mute the Firefly outputs for silent tuning on stage. This of course necessitated adding a separate tuner out.
We then thought about effects. With two inputs, we had to come up with a way to enable the musician to insert effects onto both instruments. A standard TRS effects loop as found on mixing consoles proved to be the best solution. The TRS insert loop employs standard send & receive effects loop cables which are readily available at any music store.
For concert touring, being able to rack mount a DI is really important. Rolling racks in and out of arenas makes setups quicker and more efficient. And with today's high fuel costs, saving space is critical. We chose to make the Firefly as small as possible so that it could be rack mounted into a single space. For the studio, we decided to add a cool looking handle. This would enable the engineer to move the Firefly around the studio and bring it as close as possible to the source to maximise signal to noise.
Optimizing the tone for any instrument
A really cool trick that engineers use in Nashville when recording acoustic instruments is to introduce a high-pass (low cut) filter on the instrument. During the development stage we spoke to a number of big time Nashville engineers to get the inside track. What we discovered was that when you vary the low cut-off point to match the instrument's size, you get less interaction or modulation between the instruments. This results in a more balanced sounding recording.
We opted to add a fully variable high-pass filter on the Firefly so that it could quickly be adapted to fit. Fully counter-clockwise delivers deep bass and rotating the filter clockwise makes it easy to size the Firefly for acoustic guitar, dobro, banjo, viola, violin or mandolin.
Routing the outputs
When you look at the Firefly's back panel, you will see a ton of ¼" female connectors and a couple of XLR jacks. We chose to put all of the connectors on the rear panel to eliminate clutter. This is particularly important on hectic stages to help sort things out should something go wrong.
Next to the inputs is a high impedance ¼" instrument output labled THRU. This buffered output can be configured as either PRE or POST. When the THRU output is set to PRE the output captures the signal from inputs A or B after the Drag control but before the tube drive, insert loop and master level control.
Set this way the THRU jack is a super-clean unity gain output primarily used to feed the artist's stage amplifier. In the studio an engineer may use the PRE setting to record a second "clean" track in addition to the Firefly's XLR output by connecting the THRU output to a DI box.
When the THRU output is set to POST the output is identicle to the XLR output ensuring the same tone is sent to the players amp and the PA. In most cases we anticipate that the artist will want to add the Firefly's warmth and harmonics to the signal path.
Finally, there are two XLR connectors. The first is a standard 3-pin XLR output while the other is a 4-pin XLR that is used to connect the power supply. By changing the pin configuration, it makes it impossible to connect the audio into the power slot or vice versa. XLRs are a great choice for power as they lock into place, are easily replaced and benefit by being rugged.
The balanced XLR output was designed to be both powerful and flexible. You will find that the Firefly's output is much hotter than a regular DI. We chose to 'rev up the engine' so that the Firefly could be used 'live' with an active PA cabinet or even drive a power amplifier. We also added a 180° polarity reverse switch on the output that would enable the engineer to better phase-match the amp on stage with the PA system or when used with acoustic guitars, could help eliminate feedback by 'electronically moving' the acoustical peaks out of the way. This, coupled with the high-pass filter, makes the Firefly particularly effective when it comes to solving resonant feedback problems on stage.
The Firefly... just about as good as it gets!
After several years of development, testing various prototypes, and changing up the feature set until we got it right, we are pleased to say that the Firefly is finally here. And the results are nothing short of spectacular. The Firefly produces a warm rich tone with plenty of even order harmonic overtones that is sure to please the most demanding artist.