Skip to product information
1 of 13
Earn 10% Alto Bucks

Radial Jdi Duplex Mk3 Stereo Direct Box

Radial Jdi Duplex Mk3 Stereo Direct Box

Limited quantities available!

The Duplex has evolved following the 10 year development of the Radial JDI. In 1996, the JDI started life as a hand assembled direct box housed in an aluminum tube. It would be 5 years later that the JDI would be transformed with its innovative book-end design that at once increased performance capabilities while reducing costs to where it became an affordable solution for those that face the many challenges encountered daily in the ‘real world’ of professional audio. The new book-end format would also enable us to produce a wider body and the first product bearing this new design would be the Duplex. The original concept behind the Duplex was to provide a simple stereo solution for hectic stages that would combine the features found in two Radial JDIs and fit them into a single box. Right from the get go, the Duplex found an audience with pro-touring rigs for stereo keyboards. Soon after, major recording artists like bassist Tony Levin of Peter Gabriel and King Crimson fame began using the Duplex for more complex instrument systems. As radial popularity grew, audio-visual companies began adopting the Duplex as a ‘Swiss Army’ fixit box that could be used just about anywhere to eliminate buzz and hum in sound systems. The Duplex made it easy. All you needed was a few RCA adaptor and you were set to go. Then one day, one of Radial's customers piped up and said: “If only we could connect those high-output Sony VTRs to the direct box, we could then meet any challenge”. This got us thinking and spawned the development of the next generation Duplex. The Mk4 incorporates added connectivity with both RCA connectors and +4dB line level inputs for extra high output sources.
View full details
  • Details
  • Reviews

The Radial JDI Duplex is a full-feature, stereo passive direct box designed to enhance connectivity, reduce noise, and simplify the hectic life of the touring professional, broadcast engineer or AV integrator. It is plug-and-play easy to use while delivering the utmost sonic quality.

Like the Radial JDI, the Duplex employs two high-performance Jensen audio transformers with the same pristine audio signal path that has made the JDI the industry standard. It features exceptional signal handling with virtually zero phase shift or harmonic distortion, while remaining linear across the entire audio spectrum. When driven to extremes, the natural transformer saturation and resulting warm Bessel curve makes the Radial Duplex the perfect choice for smoothing out highly dynamic instruments such as digital pianos and electronic drums that can sound harsh when pushed. Transformer isolation provides the additional benefit of eliminating troublesome ground loops that can cause hum and buzz in the audio system or interfere with video displays.

This 'Swiss Army knife' DI is equipped with ¼' connectors for instruments, RCA connectors and a 3.5mm TRS for unbalanced -10dB consumer electronics plus XLR inputs for +4dB professional line sources. Radial's innovative book-end design provides protective zones on the front and rear to keep connectors and switches out of harm's way. The 14 gauge I-beam inner frame adds tremendous rigidity to eliminate outside stresses that could torque the PC board and cause premature solder joint and trace failure. The steel outer shell couples with the transformer's MuMETAL® shield to protect against stray magnetic fields from power transformers or lighting systems that could cause interference. Finally, a full-bottom no-slip pad works double-duty by providing both mechanical and electrical isolation. The Radial Duplex delivers outstanding connectivity, superlative audio and quiet dependable performance.

  • Stereo direct box for high output sources
  • Ultra linear response from 10Hz to 40kHz
  • Virtually zero phase & harmonic distortion
  • Eliminates hum and buzz from ground loops
More Information
Product Name Radial Jdi Duplex Mk3 Stereo Direct Box
Brand Radial Engineering
Condition New
MPN R8001020
UPC 676101034093
Shipping Option Free Shipping to the Continental U.S.

Radial Jdi Duplex Mk3 Stereo Direct Box

Details

The Radial JDI Duplex is a full-feature, stereo passive direct box designed to enhance connectivity, reduce noise, and simplify the hectic life of the touring professional, broadcast engineer or AV integrator. It is plug-and-play easy to use while delivering the utmost sonic quality.

Like the Radial JDI, the Duplex employs two high-performance Jensen audio transformers with the same pristine audio signal path that has made the JDI the industry standard. It features exceptional signal handling with virtually zero phase shift or harmonic distortion, while remaining linear across the entire audio spectrum. When driven to extremes, the natural transformer saturation and resulting warm Bessel curve makes the Radial Duplex the perfect choice for smoothing out highly dynamic instruments such as digital pianos and electronic drums that can sound harsh when pushed. Transformer isolation provides the additional benefit of eliminating troublesome ground loops that can cause hum and buzz in the audio system or interfere with video displays.

This 'Swiss Army knife' DI is equipped with ¼' connectors for instruments, RCA connectors and a 3.5mm TRS for unbalanced -10dB consumer electronics plus XLR inputs for +4dB professional line sources. Radial's innovative book-end design provides protective zones on the front and rear to keep connectors and switches out of harm's way. The 14 gauge I-beam inner frame adds tremendous rigidity to eliminate outside stresses that could torque the PC board and cause premature solder joint and trace failure. The steel outer shell couples with the transformer's MuMETAL® shield to protect against stray magnetic fields from power transformers or lighting systems that could cause interference. Finally, a full-bottom no-slip pad works double-duty by providing both mechanical and electrical isolation. The Radial Duplex delivers outstanding connectivity, superlative audio and quiet dependable performance.

  • Stereo direct box for high output sources
  • Ultra linear response from 10Hz to 40kHz
  • Virtually zero phase & harmonic distortion
  • Eliminates hum and buzz from ground loops
More Information
Product Name Radial Jdi Duplex Mk3 Stereo Direct Box
Brand Radial Engineering
Condition New
MPN R8001020
UPC 676101034093
Shipping Option Free Shipping to the Continental U.S.
Reviews