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  4. Radial PRO48 Active DI Box
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Radial PRO48 Active DI Box
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Radial PRO48 Active DI Box

Product Code: 403540

The Pro48™ is a compact high-performance 48V phantom powered active direct box designed specifically for todays high output instruments.

£93.55 (INC VAT)
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Radial PRO48 Active DI Box

The Pro48's innovative internal switching power supply significantly increases headroom producing less distortion while yielding a smooth, linear response that extends from 20Hz to well above 40kHz. This results in natural, uncolored signal that is as good or better than DI boxes costing several times more. The superior performance makes the Pro48 an ideal candidate for use with battery powered active basses and acoustic guitars that tend to overload other direct boxes.

The compact Pro48 is built road-ready with 14 gauge steel throughout. A unique book-end™ design creates a protective zones around the switches and connectors while the internal I-beam construction assures outside stress will not torque the PC board and deteriorate solder connections. A full bottom no-slip pads adds mechanical isolation and electrical insulation to further extend the Pro48's lifespan.




  • High performance active direct box
  • Increased dynamic range and headroom
  • 48V phantom powered with switching supply
  • Ideal for acoustic guitar and bass
  • * Audio circuit type: Proprietary analog circuit with low-noise op-amp
  • * Frequency response: 20Hz ~ 20kHz (± 1.5 dB
  • * Dynamic range: 99dB
  • * Total harmonic distortion: 0.001% @ 0 dBu
  • * Intermodulation Distortion: 0.002% @ 0 dBu​BMD 404
  • * Phase Deviation: +28º at 20Hz | +1º at 1kHz | -2º at 20kHz
  • * Input Impedance: 220kΩ - ¼" input
  • * Output Impedance: 600Ω - XLR output
  • * Equivalent Input Noise: -86dBu
  • * Noise: -82dB below 0dBu
  • * Maximum Input: +9dBu
  • * Construction: 14-gauge steel
  • * Size (L x W x D): 108 x 70 x 44mm
  • * Weight: 0.54kg
  • * Power: 48V phantom - proprietary digital switching
  • * Conditions:For use in dry locations only between 5°C and 40°C
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