Radial Engineering ProDI Direct Box

Product #96255 | SKU RA-PRODI | Radial
In stock Ships tomorrow
Our Price $219.00
In stock Ships tomorrow
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Ships tomorrow. Deliver to Auckland for $5.90 Change location
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  • For Stage & Home Recording Studio Use
  • Handles High-Output Instruments
  • Transformer Isolated, No Ground Loops


The Radial Engineering ProDI Direct Box is a high-quality, single-channel, ultracompact passive direct box designed to handle high-output instruments without distortion.

The unit features a custom-made transformer that is able to handle high levels without saturation and has a linear frequency response from 20 Hz to 18.5 kHz, making it ideal for electronic musical instruments and audio equipment. Also featured is a -15 dB pad for high-output sources and ground-lift switch to troubleshoot noise from ground loops.

A 14-gauge welded I-beam inner chassis and outer shell greatly reduce the possibility of torque stresses being applied to the PC board. A full-bottom no-slip rubber pad works double-duty by providing protection from electrical shock and making sure the ProDI stays put.


Input Connections 1 x 1/4" TS
Output Connectors 1 x XLR
1 x 1/4" TS Thru
Input Level + 18 dB at 20 Hz
Output Level Not Specified by Manufacturer
Controls -15 dB Pad
Ground-Lift Switch
Frequency Response 20 Hz to 18.5 kHz, ±2.5 dB
Noise Not Specified by Manufacturer
Dynamic Range 128 dB
THD 0.01% from 20 Hz to 20 kHz at -10 dB
Phase Deviation 1° at 100 Hz, 8° at 20 Hz
Power Passive
Dimensions 108 x 70 x 44 mm
Weight 540 g
Specialities Custom Audio Transformer on Input Provides 100% Isolation to Eliminate Hum and Noise Causing Ground Loops while Maintaining Signal Integrity

In The Box

  • Radial Engineering ProDI Direct Box


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  • Product: Radial Engineering ProDI Direct Box
  • Manufacturer: Radial
  • Model: ProDI
  • RM Product #: 96255
  • Warranty: 5 year manufacturer warranty

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