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Radial Engineering


Radial Engineering ProD8 8 Channel Rackmount DI

The Radial ProD8 is a high performance 8-channel passive direct box optimised for keyboard rigs in professional touring. The unique design begins with fully redundant dual ¼" inputs on all channels. These are summed together to enable the system technician to patch in a backup keyboard and have it on standby should a device go down during a live show.  Up to 16 keyboards or 8 stereo sets to be connected should the need arise. A (shared) ¼" TRS effects insert jack on each channel allows two keyboards to share the same effect while adding greater routing options while ¼" thru-put delivers a direct feed to the artist's playback system.


      • High density 8-channel rackmount DI for multiple keyboards
      • Can handle extreme dynamics from high output digital sources
      • Can be used as a backup system via redundant inputs
      • Rack ears can be mounted in reverse to optimise access to the patching setup

      Specifications    RADIAL ProD8
      Audio circuit type:  Passive, transformer based
      Number of channels: Eight channel
      Frequency response:  20Hz ~ 18.5KHz (± 0.2dB)  
      Dynamic range:  128dB 
      Maximum input:  +18dB @ 20Hz 
      Total harmonic distortion:  0.01% from 20Hz~20kHz @-10dB
      Phase deviation:  1° @ 100Hz; 8° @ 20Hz 
      Input impedance:  140k Ohms, unbalanced 
      Output impedance:  150 Ohms, balanced 
      Transformer: Eclipse ET-DB2, 12:1 ratio
      Shield: Faraday, mu-metal can
      Input pad:  -15dB  
      180° polarity reverse:  Inverts absolute phase
      Ground lift:  Disconnects pin-1 at XLR output 
      XLR configuration:  AES standard (pin-2 hot) 
      Connectors: 1/4" in & thru, TRS insert, 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 ("19" x 1.75" x 6.25")
      Weight:  3.26 kg (7.2lb)
      Shipping Size: W x H x D: 260 x 114 x 568mm (10.25" x 4.50" x 22.37")
      Shipping Weight: 3.76 kg (8.30 lb)
      Power:  Passive, no power required 
      Conditions: For use in dry locations only between 5°C and 40°C
      Warranty:  Radial 3-year, transferable
      Specifications are subject to change without notice.

      Download the Radial Engineering ProD8 Smartsheet
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