Back to Top

RadialJDI Duplex Stereo Direct Box with Jenson Transformer

SKU: R800-1020-00
UPC: 676101034093

Be the first to write a review!

Available - Item in Stock


£445.81 (Ex VAT)

The JDI Duplex takes the exceptional transparency and wide bandwidth of the JDI Stereo passive direct box, and adds numerous connector types and line-level inputs to provide the audio technician with the ability to interface with any stereo sound source. Designed to handle extreme signal levels without distortion, it utilises two world-class Jensen JT-DB-EPC audio transformers to deliver a smooth, warm sounding Bessel curve - reminiscent of the finest vintage gear. Ruler flat from 10Hz to 40kHz and with virtually zero phase deviation, the JDI Duplex delivers the natural, pure sound of the instrument without artifact. The inputs can be accessed via 1/4", RCA, 3.5mm TRS, or XLR line-level connectors, making it easy to plug in any sound source, from stereo instruments to consumer playback equipment, or professional +4dB line-level audio equipment.

Technical Specification

  • Audio circuit typePassive, transformer based
  • TransformerJensen JT-DBE
  • Number of channels2
  • Frequency response20Hz ~ 20kHz at +/- 0.2dB
  • Dynamic range135dB
  • Total harmonic distortion0.001%; 1kHz/+4dBu; 600 Ohm load
  • Phase Deviation-1° @ 20Hz; 0.5° @ 150Hz; 600 Ohm load
  • Input Impedance140k Ohm PAD off; 10k Ohm PAD on
  • Output Impedance600 Ohms
  • Maximum Input+20dB @ 1kHz
  • Input pad, Mono Sum, 180° polarity reverse, Ground lift
  • Input Connectors1/4", RCA, 3.5mm, XLR
  • Output ConnectorsXLR, 1/4" thru
  • ExtrasLine Level or hi-Z input
  • Construction14 gauge steel chassis & outer shell
  • Size (L x W x D)160mm x 48 x 127mm (6.3" x 1.9" x 5")
  • Weight1kg (2.2lbs)
  • Shipping size (L x W x D)210 x 159 x 83mm (8.25" x 6.25" x 3.25")
  • Shipping weight1.43 kg (3.15 lbs)
  • PowerPassive, no power required
  • ConditionsFor use in dry locations only between 5°C and 40°C

Shop With POLAR


    Secure (SSL encrypted) payments with MasterCard, Visa, American Express and PayPal.


    Standard 2-3 Day, Next Day and Saturday delivery options available.


    As the exclusive UK distributor to some of the world’s top brands, you can trust that our products are authentic and direct from the manufacturer.