Radial EngineeringHDI High Definition Studio Direct Box
Independent shopping perspective
The Korena take
HDI extends well beyond a straightforward D.I. in a studio signal path. Its Color control and opto-compressor support three distinct roles: direct injection, an ultra-clean bass preamp, or distortion added to a guitar amp signal. A custom oversized Jenson transformer is part of the design. It can be put to work with electric or acoustic guitar, bass, synths, and electronic keyboards, giving sessions clean direct routing alongside selectable processing options.
Strong match
Who this is for
- Studio sessions routing electric or acoustic guitars, bass, synths, or electronic keyboards.
- Bass recording that calls for the HDI’s ultra-clean preamp role.
- Guitar amp signals where added distortion is part of the intended sound.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can the HDI be used as more than a direct box?
Yes. It can serve as a straight D.I., an ultra-clean bass preamp, or add distortion to a guitar amp signal.
02What instruments can be used with the HDI in the studio?
It is described for electric and acoustic guitars, bass, synths, and electronic keyboards.
03What processing controls does it have?
The HDI includes a Color control and an opto-compressor.
