Radial Engineering Pro48 Active Direct Box

Product #96231 | SKU RA-PRO48 | Radial
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Our Price $239.00
In stock Ships tomorrow
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  • Increased Dynamic Range and Headroom
  • 48V Phantom Powered & Switching Supply
  • -15 dB Pad Switch


The Radial Engineering Pro48 Active Direct Box is a high-performance, active direct box designed specifically for guitars and bass with active pickups that produce considerably higher output. It exhibits excellent headroom and dynamics.

Utilising 48V phantom power from a mixing console, the unit employs an innovative digital switching power supply that significantly increases headroom and allows for less distortion while yielding a smooth, linear response.

This makes the Pro48 an ideal candidate for use with battery-powered active basses and acoustic guitars that tend to overload direct boxes. An input pad helps prevent overload from hot signals and a ground-lift switch is provided to reduce noise caused by ground loops.

The Pro48 is constructed using 14 gauge steel with Radial's unique book-end design that provides protective zones around the switches and connectors. The internal welded I-beam construction assures outside stress will not torque the PC board.


Input & Output 1 x 1/4" TS, Input
1 x 1/4"TS, Thru
1 x XLR 3-Pin, Balanced Output
Input Level +9 dBu
Output Level Not Specified by Manufacturer
Impedance Input: 220 Kilohms
Output: 600 Ohms (XLR Output)
THD 0.001% at 0 dB
Intermodulation Distortion 0.002% at 0 dBu
Phase Deviation +28° at 20 Hz, 1° at 1 kHz, -2° at 20 kHz
Equivalent Input Noise -86 dBu
Noise -82 dB Below 0 dBu
Frequency Response 20 Hz to 20 kHz, ±1.5 dB
Controls -15 dB Pad Switch
Ground-Lift Switch
Power 48 V Phantom Power, Proprietary Digital Switching
Dimensions 108 x 70 x 44 mm
Operating Temperature 5 to 40°C
Weight 540 g

In The Box

  • Radial Engineering Pro48 Active Direct Box


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  • Product: Radial Engineering Pro48 Active Direct Box
  • Manufacturer: Radial
  • Model: Pro48
  • SKU: RA-PRO48
  • RM Product #: 96231
  • Warranty: 5 year manufacturer warranty

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