In order to give you better service we use cookies. By continuing to browse the site you are agreeing to our use of cookies.

Active DI

Active DIs employ buffers and require power to operate, and are typically preferred by musicians with passive instruments and acoustic guitars.

Filter & sort
Number of articles 21
Sort
Radial HDI
R800 2025 00

High Definition Studio Direct Box

Despite the complex circuitry housed within the unit, the HDI has an elegant set of controls that allows the musician or engineer to dial up a record-ready sound with a minimal amount of tweaking required. The Level control drives the inputs of the HDI with instant visual feedback from the responsive front panel meter, while the Color knob provides seamless blending between an ultra-clean tone and amp-style distortion and saturation, so you can add just the right amount of character and grit to your instrument. A smooth Opto compressor can be engaged to control the peaks of the input signal, and a High-Pass Filter clears up any excessive low frequencies added by the Color control. Lastly, a Presence control accentuates the highs and high-mids, providing the ability to cut through the mix with results that are sure to impress.

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

 

Buy
Radial J48
R800 3001 00

Phantom Powered Active Direct Box

Most battery-powered guitars and basses will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which have are only able to handle about 3 Volts. The J48 uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through.

Specifications

Audio circuit type Proprietary analog circuit with low-noise op-amp
Number of channels Single channel
Frequency response 20Hz - 20kHz
Dynamic range 109dB
Total harmonic dirstortion 0.002% @ -5dBu
Intermodulation dirstortion 0.003% @ -3dBu
Phase deviation +10° @ 20Hz; 0° @ 1kHz; -1° @ 20kHz
Input impedance 220k Ohms
Output impedance 600 Ohms
Equivalent input noise -103dBu
Noise -99dB below 0dBu
Maximum input +10dBu @ 20Hz
Power 48V phantom - proprietary digital switching

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

 

Buy
Radial J48 Stereo
R800 3002 00

Phantom Powered Stereo Active Direct Box

Most battery-powered instruments and stereo keyboards will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which have are only able to handle about 3 Volts. The J48 Stereo uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through. The J48 maintains stereo separation between the left and right channels, allowing it to be used on two separate instruments or with stereo sources such as keyboards.

Specifications

Audio circuit type Proprietary analog circuit with low-noise op-amp
Number of channels Two channels
Frequency response 20Hz - 20kHz
Dynamic range 109dB
Total harmonic dirstortion 0.002% @ -5dBu
Intermodulation dirstortion 0.003% @ -3dBu
Phase deviation +10° @ 20Hz; 0° @ 1kHz; -1° @ 20kHz
Input impedance 220k Ohms
Output impedance 600 Ohms
Equivalent input noise -103dBu
Noise -99dB below 0dBu
Maximum input +10dBu
Power 48V phantom - proprietary digital switching

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

 

Buy
Radial Pro48
R800 1105 00

Active Direct Box

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.

Specifications

Audio circuit type Proprietary analog circuit with low-noise op-amp
Number of channels Single channel
Frequency response 20Hz - 20kHz
Dynamic range 99dB
Total harmonic dirstortion 0.001% @ 0dBu
Intermodulation dirstortion 0.002% @ 0dBu
Phase deviation +28° @ 20Hz; +1° @ 1kHz; -2° @ 20kHz
Input impedance 220k Ohms
Output impedance 600 Ohms
Equivalent input noise -86dBu
Noise -82dB below 0dBu
Maximum input +9dBu
Power 48V phantom - proprietary digital switching

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

 

Buy
Radial JDX 48
R800 1402 00

Guitar Amp Direct Box

The JDX 48 makes it easy to get a consistent and natural amplifier tone through the PA system night after night, by taking a feed directly from your amplifier and employing Radial's popular JDX speaker emulation that produces an effect similar to placing a dynamic microphone in front of a 4x12 half stack cabinet. This gives you a more manageable sound onstage for gigs where feedback is an issue, or if mic'ing your amp isn't an option. For artists that employ in-ear monitoring systems, the JDX 48 provides consistent tone each night in the monitor mix for shorter setup times and a more comfortable audio feed for the artist.

Specifications

Audio circuit type Discrete Class-A - Transformer Isolated
Number of channels Single channel
Frequency response Shaped for guitar use
Dynamic range 114dB
Total harmonic dirstortion <0.015% (+10dBu input @ 1kHz)
Intermodulation dirstortion 0.03% (+10dBu input @ 1kHz)
Input impedance 15k Ohms
Output impedance 2k Ohms
Noise -100dBu below 0dBu
Maximum input 120W @ 8 Ohms
Maximum output +14dBu (clip level)
Power 48V phantom or +15VDC/400mA adapter (included)

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

 

Buy
Radial USB Pro
R800 1050 00

USB Laptop Direct Box

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

Specifications

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

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

 

Buy
BT-Pro
R800 1055 00

Stereo Bluetooth DI Box

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

Specifications

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

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

 

Buy
Radial JPC
R800 1026 00

Active Direct Box for Laptop Computers

The JPC is a stereo direct box that is easy to use with practically any consumer electronic device. It utilizes active buffers and transformer isolation to create a hybrid circuit that blocks ground loops and reduces system noise, along with AC blocking capacitors to prevent any audio system noise from bleeding back into the computer. The choice of ¼", RCA and 3.5mm input connectors make it easy to interface with all types of unbalanced audio sources such as computers, smartphones, and tablets, and the outputs are XLR balanced mic level to feed snake systems and PAs. Powering the JPC is accomplished via 48V phantom from a mixing console, allowing the JPC to be used in concert environments without requiring an external power supply.

Specifications

Audio circuit type Unity Gain buffers and inverters using low noise high end audio grade operational amplifiers
Number of channels Two channels
Frequency response 20Hz - 20kHz (±2dB)
Dynamic range 111dB
Total harmonic dirstortion 0.01% @ -15dBu output
Intermodulation dirstortion Less than 0.15% at any level below clipping
Phase deviation +29° @ 20Hz; -5° @ 1kHz; -80° @ 20kHz
Input impedance 10k Ohms
Output impedance 600 Ohms
Equivalent input noise -94dBu
Noise -97dB below 0dBu output
Maximum input +17dBu
Power 48V Phantom Power (each channel requirers 48V phantom)

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

 

Buy
Radial PZ-DI
R800 3005 00

Variable Load Active DI with Piezo Optimized Input

The PZ-DI has a variable load selector switch that allows you to set the input impedance of the direct box, so you can optimize the performance with your instrument's pickups. The 1 meg ohm position delivers the classic impedance found on most active DI boxes, while the 220k ohm setting warms up the tone of magnetic pickups to provide the feel and tone as if your instrument were connected directly to an amplifier. The third setting is an ultra-high 10 meg ohm impedance that is specifically designed for piezo transducers, helping compensate for the harsh or squawky tone that can occur when a piezo is connected to a lower impedance input.

Specifications

Audio circuit type Proprietary analog circuit with low-noise FET op-amp
Frequency response 20Hz - 20kHz
Dynamic range 105dB
Total harmonic dirstortion 0.02%
Gain +4.6dB
Input impedance 10M / 1M / 220k Ohms
Output impedance 200 Ohms (nominal)
Equivalent input noise -98dBu
Power 48V phantom - proprietary digital switching

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

 

Buy
Radial StageBug SB-1
R800 0110 00

Ultra-compact Active DI

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!

Specifications

Audio circuit type Active Buffer with Phase Splitter
Number of channels Single channel
Frequency response 20Hz - 20kHz
Dynamic range <100dB
Gain +1.3dBu / +4.4dBu
Clip level +3.3dBu / +12.3dBu
Total harmonic dirstortion <0.006%
Intermodulation distortion <0.01%
Phase deviation 25/12° maximum
Input impedance 140k/23k Ohms
Output impedance 330 Ohms
Equivalent input noise -101dBu
Noise -97dBu
Maximum input +2dBu / +8dBu
Power 48V phantom power, 5mA

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

 

Buy
Radial StageBug SB-4
R800 0140 00

Compact Active DI with Piezo Input

The StageBug SB-4 allows you to retain the natural tone of your piezo-equipped instrument when amplified through a PA system. Unlike typical direct boxes, the SB-4 features a very high 5 meg ohm impedance that smooths out troublesome peaks that give piezo transducers a bad name. This higher impedance also broadens the frequency response for a more natural and pleasing sound. The active circuit balances the audio signal to enable long runs up to 100 meters without loss, while delivering spectacular linearity and low distortion throughout the audio range. Output connections include an aux out for a stage amplifier plus a standard XLR output to feed the PA.

Specifications

Audio circuit type Piezo optimized active buffer
Number of channels Single channel
Frequency response 20Hz - 20kHz
Dynamic range <100dB
Gain +2dB
Total harmonic dirstortion <0.006%
Intermodulation distortion <0.01%
Phase deviation 10° @ 50Hz
Input impedance 5M Ohms
Output impedance 330 Ohms
Equivalent input noise -101dBu
Noise -97dBu
Maximum input +4dBu
Power 48V phantom power, 5mA

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

 

Buy
Radial Firefly
R800 2020 00

High Output Vacuum Tube DI Box

The Firefly's drive circuit utilizes a 12AX7 vacuum tube, which is the most popular tube made today and can be found in nearly all guitar amplifier designs. This helps provide the character and feel of a vintage device, while still maintaining low distortion and noise profiles common to modern pro audio equipment. The Firefly excels when used on instruments that sound too clinical or one dimensional when recorded directly, adding punch and warmth to bass or guitar tracks both on stage and in the recording studio.

Specifications

Audio circuit type 100% discrete class-A FET with tube drive
Number of channels Single channel with A/B input select
Frequency response 20Hz - 20kHz
Dynamic range <100dB
Gain +20dB maximum
Total harmonic dirstortion 0.15% from 20Hz - 20kHz
Intermodulation distortion 0.3%
Input impedance Drag Off: 3.9M Ohms | Drag On: Variable 22k ~ 500k ohms
Output impedance 150 Ohms
Equivalent input noise -101dB
Noise -98dB at unity gain
Maximum input Variable from -12dB - +20dB
Power 5-pin XLR, +/-16V & 48V, 1600mA

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

 

Buy
Radial JDV
R800 2015 00

Active Direct Box, Preamp, & Input Switcher

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

Specifications

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

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

 

Buy
Radial J33
R800 1300 00

Active Turntable Preamp & DI Box

The J33 provides the ability to connect turntables to pro audio equipment such as a recording interfaces and mixers, allowing you to easily integrate your vinyl collection with studio gear for playback or recording. Balanced XLR mic-level outputs are available for connection to a mic preamplifier for archiving or sampling in the studio, and -10dB consumer line-level outputs are also provided to connect to home stereo equipment. The J33 can also be used in a live performance environment, offering an improved interface for DJs to connect to the PA system.

Buy
Radial Headload V4
R800 7054 00

Guitar Amp Load Box

Featuring two built-in JDX amp DIs—one pre-EQ and one post-EQ—the Headload eliminates the need to use a microphone to capture the sound from your amplifier. Should you decide to combine the DI signal with a microphone, the Headload is augmented with a built-in Radial Phazer to time-align the two signals to create massive tones. The Headload uses a 6-position rotary switch to set the desired power reduction from unaltered all the way down to complete silence. When the output is completely soaked, the high-quality headphone amplifier can be used for silent 3:00AM practicing

Specifications

Audio circuit type Passive attenuation circuit with active equalization
Gain -40dB typical
Total harmonic dirstortion <0.05%
Intermodulation distortion <0.05%
Input impedance 4 Ohms
Output impedance 250 Ohms
Noise -104dBu
Power 15V 4-Pin 500mA power supply

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

 

Buy
Headload Prodigy
R800 7060 00

Combination Load Box & DI

With the Headload Prodigy, you can crank your amp to the sweet spot while keeping output levels in check, allowing you to retain your optimal tone when performing, recording and practicing. The Prodigy can pass 25%, 50% or 100% of the signal from the amp head to the speaker cabinet, or it can also 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, and it's also great for silent recording where you want to take advantage of 'high power' amp distortion without upsetting the neighbours. A balanced DI output features Radial's popular JDX Reactor circuit, which emulates the tone of a 4x12 half stack for a realistic and consistent tone through the PA or when connected to a recording interface.

Specifications

Audio circuit type Passive attenuation circuit with active equalizationamp
Frequency response Shaped to emulate a classic guitar cabinet
Gain -30dB / -42dB
Total harmonic dirstortion 0.05%
Intermodulation dirstortion 0.05%
Output impedance 8 Ohms speaker load
Noise -106dBu
Maximum input 100 watts continuous
Maximum output 100%, 50%, 25%, 0%
Power 15V 400mA power supply

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

 

Buy
4-Play
R800 1432 00

Active DI Box with Four Selectable Outputs

Many performing multi-instrumentalists will have each of their instruments feed a separate channel in the PA system, allowing for individual level, EQ, and effects settings. Typically this would require multiple DI boxes and instrument cables, creating a mess on stage that can be difficult to manage. With the 4-Play, you only need to connect one cable to the input of the pedal, and it provides you with four DI outputs to feed the PA system. Not only does this mean fewer cables on stage and less devices to keep track of, but it also eliminates the need to flag down the sound engineer when you need to switch instruments during a performance. The 4-Play puts you in control, while streamlining your setup on stage.

Specifications

Audio circuit type Classic Class-A FET input with balanced audio grade opamp output
Number of channels 4 channels
Frequency response 20Hz - 20kHz
Dynamic range 113dBu
Gain 0dBu
Clip level +13dB
Total harmonic dirstortion 0.03%
Intermodulation distortion 0.02%
Phase deviation -0.12° @ -20dBu / 1kHz
Input impedance 10M Ohms
Output impedance 5.4k Ohms
Noise -100dBu
Maximum input +8dBu
Power 9V Adaptor / 80mA center pin negative

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

 

Buy
Radial DiNET DAN-RX
R800 1062 00

Compact Dante network interface

The DAN-RX provides a simple way to take a stereo feed from a Dante network and convert it to analog audio for monitoring in any location. Balanced XLR outputs allow you to connect to professional audio equipment such as a mixing console, amplifier, or a pair of powered speakers. In addition, a local 3.5mm headphone output is equipped with its own level control to test audio before connection to the PA system or to monitor locally with headphones, making it useful in events that use personal monitor systems. The DAN-RX can be powered from an included external supply or any Power over Ethernet (PoE) network switch, and both of these options can be used simultaneously to provide redundancy for critical applications.

Specifications

Audio circuit type High current balanced active output device
Number of channels Two channels
Frequency response 20Hz - 20kHz
Dynamic range >100dB
Gain 8dBu max @ -6dBfs
Total harmonic dirstortion 0.007% @ -6dBfs
Output impedance 150 Ohms
Power 15VDC 400mA (included) or PoE

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

 

Buy
Radial DiNET DAN-TX
R800 1063 00

Compact Dante Network Interface

Need to connect a smartphone, tablet, or any playback device to a Dante network? How about an electric guitar, while still feeding an amp on stage? The DAN-TX can do it all. In fact, with signal handling of up to +24dB, you can connect the line level outputs of a mixing console to the DAN-TX without breaking a sweat. A local level control allows you to adjust as needed, and a number of input connector types ensures you won’t be digging around for an adaptor cable at a critical moment. No matter what source you’re using, the DAN-TX is the easiest way to get your analog audio onto a Dante network.

Specifications

Audio circuit type High current balanced active input device
Number of channels Two channels
Frequency response 20Hz - 20kHz
Dynamic range >103dB
Total harmonic dirstortion 0.008% @ -6dBfs
Intermodulation distortion 0.0017% -10dBfs
Input impedance Unbalanced: 240kΩ (20kΩ Line Mode), Balanced: 40kΩ,
Noise -98dB (EIN)
Power 15VDC 400mA (included) or PoE

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

 

Buy
Radial DiNET DAN TX-2
R800 1064 00

Two Channels of Analog Audio over Dante

The DiNET DAN-TX2 makes it easy to transmit two channels of high quality analog audio over a Dante or AES67-compliant network. Multiple input options are provided, with Balanced XLR/TRS connectors for professional audio sources, RCA jacks for line level consumer devices, and a 3.5mm aux input for connection to laptops, smartphones, and tablets. Trim controls and pad switches are included for each channel, with a link switch to simplify control for stereo sources. The RJ45 network connection is compatible with Neutrik etherCON connector carriers to prevent accidental disconnection and protect cable terminations, and redundant powering is available for critical applications by using the included external power supply and Power over Ethernet (PoE) simultaneously. The DAN-TX2 can be mounted in 19" equipment racks with the optional SA series rackmount adaptor kit.

Specifications

Audio circuit type High current balanced active input device
Number of channels Two channels
Frequency response 20Hz - 20kHz
Dynamic range >103dB
Total harmonic dirstortion 0.008% @ -6dBfs
Intermodulation distortion 0.0017% -10dBfs
Input impedance Unbalanced: 20k Ohms, Balanced: 40k Ohms
Output impedance 330 Ohms
Equivalent input noise -98dB
Maximum input +28dBu
Power 15VDC 400mA (included) or PoE

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

 

Buy
Radial DiNET DAN  RX-2
R800 1065 00

Dual Output Dante Endpoint

The DAN-RX2 is a road-worthy digital receiver capable of delivering two channels of analog audio to any location from a Dante or AES-67 compliant network. Balanced XLR outputs include a ground lift and a separate headphone amp with its own level control is included for local testing or personal monitoring. The RJ45 network connection is compatible with Neutrik etherCON connector carriers to prevent accidental disconnection and protect cable terminations. Redundant powering is available for critical applications by using the included external power supply and Power over Ethernet (PoE) simultaneously, and the DAN-RX2 can be mounted in 19" equipment racks with the optional SA series rackmount adaptor kit.

Specifications

Audio circuit type High current balanced active output device
Number of channels Two channels
Frequency response 20Hz - 20kHz
Dynamic range >100dB
Gain +18dBu max @ 0dBfs
Total harmonic dirstortion 0.007% @ -6dBfs
Output impedance 150 Ohms
Power 15VDC 400mA (included) or PoE

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

 

Buy

The product has been added to your shopping cart Show shopping cartCheckout