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Amp DI

Connect directly to the output of your amplifier to impart the tone of the amp on the direct track, or bypass the speaker cabinet entirely with the Headload load box.

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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)

 

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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)

 

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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)

 

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