Radial (R800 1012) Direct Box - Passive


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What's in the box:

  • Radial Engineering JDI Stereo Passive Direct Box
  • Limited 3-Year Warranty

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The Radial JDI Stereo is a passive stereo direct box designed to handle extreme signal levels without distortion of any kind. Unlike an active DI that is limited by the buffering amplifier's rail voltage, the JDI employs a pair of Jensen audio transformers that at once balance the signal and lower the impedance to drive long cables. No power is required. You simply plug in and it works. The original Radial JDI has become the most popular passive direct box in both professional touring and recording studios around the world and there is no question that the JDI Stereo is sure to follow suit.


  • Jensen Transformer equipped passive DI
  • Eliminates hum and buzz from ground loops
  • Virtually zero phase & harmonic distortion
  • Compact stereo format for twice the performance

Specifications for the Radial (R800 1012) Direct Box

{ "Audio circuit type:" : "Passive, transformer based", "Transformer:" : "Jensen JT-DBE", "Number of channels:" : "Two channels (dual mono)", "Frequency response:" : "20Hz ~ 20KHz (± 0.2dB)", "Dynamic range:" : "135dB", "Total harmonic distortion:" : "0.05% from 20Hz ~ 20kHz @-10dB", "Phase Deviation:" : "0.3° @ 100Hz; 3° @ 20Hz ", "Input Impedance:" : "140k Ohms, unbalanced ", "Output Impedance:" : "150 Ohms, balanced ", "Maximum Input:" : "+21dB @ 20Hz ~ 20kHz ", "Features" : { "Input pad, Ground lift" : "", "Input Connectors:" : "Unbalanced 1/4" ", "Output Connectors:" : "XLR out, 1/4" thru" }, "General" : { "Construction:" : "14 gauge steel chassis & outer shell", "Size (L x W x D):" : "5" x 3.3" x 1.8" (127mm x 84.1mm x 45.5mm)", "Weight:" : "1.55 lbs (703 grams)", "Shipping size (L x W x D):" : "6.5" x 4" x 3" (165mm x 102mm x 76mm)", "Shipping weight:" : "1.92 lbs (870.9 grams)", "Power:" : "Passive, no power required ", "Conditions:" : "For use in dry locations only between 5°C and 40°C" } }

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