Radial ProD8 8-ch passive DI for keyboards, 1RU 19" rackmount, reversible rack ears

Radial ProD8 8-ch passive DI for keyboards, 1RU 19" rackmount, reversible rack ears

Passive 8-Channel Rackmount Direct Box

The Radial ProD8 is a high performance 8-channel passive direct box that is surely enhanced for keyboard rings in professional touring, with redundant 1/4″ inputs for each channel and a completely passive design requiring no power to operate.

The Radial ProD8 is an 8 channel 19″ rack-mountable direct box professionally designed for professional concert touring. The feature set has been enhanced for keyboards but as with any direct box, it is certainly suitable for use with playback systems or instruments. The passive signal path incorporates a custom wound Eclipse ET-DB2 transformer and RF filtering that can withstand excessive signal levels without distortion delivering a linear response across the audio spectrum at the same time.

Professional performance

The Radial ProD8 created comes with up to 8 direct box outputs in a single 1RU rack space for professional touring, connect up to 16 channels of audio at once or with dual ¼" inputs on each channel to incorporate a backup system. A ¼" TRS effects insert jack on each channel is allowing the connection of various effects devices and adding a greater routing options at the same time, while a thru-put jack is capable of delivering a direct feed to the artist's playback system. The front panel is designed with the capability to isolated XLRs for balanced low-noise outputs, each of it is equipped with ground lift and 180° polarity reverse switches.

Transformer driven for greater headroom & low noise

The engine inside the ProD8 is a custom wound Eclipse ET-DB2 transformer that performs both the impedance matching and balancing. Linear from 20Hz to 20kHz, it is able to withstand the extreme dynamics common with today's digital keyboards. Unlike active circuits that overload and square wave when the rail voltage is exceeded, transformers saturate. This means that as the signal increases, the ProD8 naturally rounds out the tone producing a warm Bessel curve reminiscent of the very best vintage audio gear. The other significant advantage to this passive design is 100% galvanic isolation between the source and destination, which eliminates hum and buzz caused by ground loops.

Adaptable Configuration

To enhance setup options, the Radial ProD8 is equipped with reversible rack ears. This handy feature allows the system tech to position the inputs on the front of the rack when interfacing with external keyboards or have them inside if the setup is predominantly equipped with rack modules.