Radial JD6

6-channel rackmount passive DI

Our price:$1,899.00 GST
Order Code: JD6

Contact us for expected arrival, queue backorder

Bringing the class of six Radial JDI passive DI boxes and housing them all in a single 19″ rack unit, JD6 is all about high performance.

Each JD6 channel is equipped with a rear-mounted ¼” instrument input and thru-put for the artist’s amp plus a lo-Z balanced XLR output to feed the mixing desk.

Of course, being Radial, there’s a couple more string to the bow than ‘just’ six JDI slapped together, with some rack ears attached.

The front panel offers the ‘extra push over the cliff’ with an array of switches and connectors including ground lift, 180º polarity reverse, stereo-to-mono merge plus a low-pass filter to reduce unwanted high frequency noise that is common with older vintage keyboards. Channels 1 and 2 are supplemented with front panel ‘priority’ connectors that switch the input as soon as a cable is inserted for improved efficiency in the studio. Six completely independent transformer isolated channels for minimal cross-talk and maximum protection against noise, 60 cycle hum, and buzz or hum caused by ground loops.


  • Passive direct box for concert touring and studio
  • Ultra linear nickel-laminated transformers
  • Handles extreme signal levels without distortion
  • Front and rear panel connectivity for added routing options


Audio circuit type:  Passive, transformer based
Number of channels: Six channels
Frequency response:  20Hz – 20KHz (± 0.2dB)  
Dynamic range:  135dB 
Maximum input:  +21dB @ 20Hz 
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 


Transformer: Eclipse ET-DB1, 12:1 ratio
Shield: Mu-metal can with internal Faraday shield
Input pad:  -15dB  
Merge:  Sums left & right sources to mono (ch. 1 & 2 only)
180° polarity reverse:  Inverts absolute phase
Ground lift:  Disconnects pin-1 at XLR output 
XLR configuration:  AES standard (pin-2 hot) 
Connectors (ch. 1 & 2): RCA L/R in, 1/4″ in & thru, XLR-M out
Connectors (ch. 3 – 6): 1/4″ in & thru, XLR-M out


Construction:  14 gauge steel chassis & outer shell
Finish: Durable powder coat
Size:  (W x H x D) 483 x 44.5 x 159mm
Weight:  3.5kg
Power:  Passive, no power required 
Conditions: For use in dry locations only between 5°C and 40°C