The Radial ProDI's are high-quality, full-range passive direct boxes equipped with custom made audio transformers for exceptional signal handling without saturation and with extremely low phase distortion in the critical bass and mid regions. The result is exceptional clarity and definition at an attractive price point. The Radial ProDI features standard hi-Z input and thru-put ¼" connectors, -15dB input pad and ground-lift switch. The balanced output is 600 Ohm to interface with professional sn