JDV - active 'super DI' direct box Radial's flagship direct box. Features a highly acclaimed Class-A feed-forward circuit design with huge 30V internal rail voltage for absolute no-compromise performance. The JDV Mk3 expands the functionality of regular direct boxes by providing a zoned working environment......more   J48 - phantom-powered active direct box An active direct box that has been specifically developed to address the problem of limited current and resulting dynamic range associated with 48V phantom power. A unique switch-mode supply steps up the internal rails ......more   JDI - Jensen-equipped passive direct box The worlds finest passive direct box! It employs the legendary JensenŽ JT-DBE transformer which is renowned for its warm Bessel response curve. Virtually zero phase distortion, exceptional signal handling and the advantage of true isolation .....more   ProDI - basic single-channel passive direct box Following in the footsteps of the Radial JDI, the ProDI is a high-quality ultra-compact passive direct box specifically developed to allow regional sound companies and project studios to enjoy the quality of a Radial direct box at a more affordable price point.....more

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