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HomepageCables & AccessoriesD.I. › Radial Engineering Pro48
Radial Engineering Pro48

The Radial Pro48 is a high performance active direct box that is ideally suited for bass and acoustic guitars to deliver clarity without distortion or artifact.

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

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.

Exceptional sonic performance, great natural tone and an affordable price tag! The Radial Pro48 truly represents a breakthrough in value.
  • High performance active direct box
  • Increased dynamic range and headroom
  • 48V phantom powered with switching supply
  • Ideal for acoustic guitar and bass
  • Specifications
  • Audio circuit type : Proprietary analog circuit with low-noise op-amp
  • Frequency response : 20Hz ~ 20kHz (± 1.5 dB)
  • Dynamic range : 99dB
  • Noise floor : -82dB below 0dBu
  • Equivalent input noise : -86dBu
  • Maximum input : +9dBu
  • Phase deviation : +28º at 20Hz | +1º at 1kHz | -2º at 20kHz
  • Total harmonic distortion : 0.001% @ 0 dBu
  • Inter-modulation distortion : 0.002% @ 0 dBu
  • Input impedance : 220k - ¼" input
  • Output impedance : 600 - XLR output

  • Features
  • Input pad : -15dB
  • Ground lift : Disconnects pin-1 at XLR output
  • XLR configuration : AES standard (pin-2 hot)

  • General
  • Power : 48V phantom - proprietary digital switching
  • Construction : 14 gauge steel chassis and outer shell
  • Finish : Durable powder coat
  • Size: (W x H x D) Size: 2.75" x 4.25" x 1.75" (70 x 108 x 44mm)
  • Weight : 1.2 lb (544 g)
  • FCC approval : Complies with section 15 of the FCC Rules
  • Conditions : For use in dry locations only between 5°C and 40°C
  • Reviews
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    Additional information
    For more information about the Pro48, please visit the website of Radial Engineering
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