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  4. Radial J48 Active DI Box
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Radial J48 Active DI Box
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Radial J48 Active DI Box

Product Code: 403520

The J48™ is an active direct box that has been optimized to handle extreme transients without distortion, with a linear frequency response that extends from 20Hz up to 40kHz.

£176.00 (INC VAT)
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Radial J48 Active DI Box

Most battery-powered guitars and basses will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which have are only able to handle about 3 Volts. The J48 uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through.




  • Exceptional headroom & dynamic range
  • Retains the natural sound of the instrument
  • Merge switch sums stereo instruments to mono
  • Powered by 48V phantom, no batteries required




J48 for Live Touring

  • A direct box is primarily used to get an instrument signal from the stage to the mixing desk and PA system. The Radial J48 delivers the natural tone exceptionally long distances without adding distortion or coloring the sound in any way.


J48 in the Studio

  • When recording direct, the quality of the direct box interface assures the purest signal going to the track. The Radial J48 is particularly well suited for recording bass or capturing a direct track from a guitar.


Reamping with the J48

  • Reamping means sending a dry track from the recorder back out to pedals and amps. This tricks has been used for years by top professionals. The Radial J48 is ideally suited to capture the sound of the instrument for later Reamping.
  • * Audio circuit type: Proprietary analog circuit with low-noise op-amp
  • * Frequency response: 20Hz ~ 20kHz
  • * Dynamic range: 109dB
  • * Total harmonic distortion: 0.002% @ -5dBu
  • * Intermodulation Distortion: 0.003% @ -3dBu
  • * Phase Deviation: +10º at 20Hz | 0º at 1kHz | -1º at 20kHz
  • * Input Impedance: 220kΩ - ¼" input
  • * Output Impedance: 200Ω - XLR output
  • * Equivalent Input Noise: -103dBu
  • * Noise:: -99dB below 0dBu
  • * Maximum Input: +10dBu
  • * Construction:: 14 gauge steel chassis and outer shell
  • * Size (L x W x D):: 84 x 127 x 48mm
  • * Weight: 720 g
  • * Power: 48V phantom - proprietary digital switching
  • * Conditions: For use in dry locations only between 5°C and 40°C
Customer Reviews
  • Verified Customer
    on 28 September 2012
    Used to plug my Bass and Electric Guitar straight into my Motu traveller - Macbook - Logic Pro. Now I use this before the Traveller. The bass sounds incredible and the guitar does not sound thin anymore. Recommend it for anyone using a DAW and live instruments.