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Radial Engineering PROD2 Passive 2 Chanel DI Direct Box


Radial Engineering PROD2 Passive 2 Chanel DI Direct Box with two channels made for high output keyboards

Availability: 3 in stock

Radial Engineering PROD2 Passive 2 Chanel DI Direct Box

The Radial ProD2 is a 2-channel passive direct box designed to connect stereo keyboards or high output instruments to a PA system or home recording setup without noise or distortion.

  • A stereo direct box designed for keyboards
  • Smooth, warm sound rounds out digital edge
  • Able to handle huge transients without choking
  • Maybe rack-mounted for touring rigs


At the heart of the design are two high-performance Eclipse ET-DB2 transformers. These deliver 20Hz to 20kHz performance with less than 1.5dB deviation above 18kHz and are able to withstand tremendous signal levels without distortion. Unlike active circuits that overload when the signal exceeds the rail voltage, transformers saturate. This creates a pleasing effect that naturally rounds out the tone, acting like a subtle limiter which is particularly advantageous when interfacing the ProD2 with digital pianos, samplers and drum machines that can produce excessive dynamics. Transformers are particularly adept at eliminating hum and buzz caused by ground loops.

The ProD2 is a high-quality ultra-compact stereo passive direct box that features custom-made Radial transformers. Essentially two ProDIs in one compact enclosure the ProD2 is a great choice for stereo keyboards, DJ equipment, and consumer hi-fi systems. Its high-performance transformer has an exceptionally linear frequency response from 20Hz to 18kHz and is able to handle high signal levels without saturation making it ideal for electronic instruments. The ProD2 is housed in an extremely rugged two-piece 14 gauge steel enclosure with a book-end designed outer shell that prevents damage to the switches, features a -15dB PAD for high output sources and ground lift switch to troubleshoot noise from ground loops.


  • Audio circuit type: Passive, transformer-based
  • Transformer: Eclipse ET-DB2, 12:1 ratio
  • Number of channels: 2
  • Frequency response: 20Hz ~ 18.5KHz (± 0.2dB)
  • Dynamic range: 128dB
  • 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
  • Maximum Input: +18dB @ 20Hz


  • Input pad, 180° polarity reverse, Ground lift
  • Input Connectors: 1/4″
  • Output Connectors: XLR, 1/4″ thru


  • 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: .54kg (1.2lbs)
  • Shipping size (L x W x D): 6.5″ x 4″ x 3″ (165mm x 102mm x 76mm)
  • Shipping weight: 0.61 kg (1.35 lbs)


  • Passive, no power required


  • For use in dry locations only between 5°C and 40°C


  • Radial 3-year, transferable




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