Pro-DI
Single Channel unit

Pro-DI Duo
Dual Channel unit in unique DoubleHeader format

The unique Audibox DoubleHeader format puts one channel on the front of the unit, and a second channel on the rear, giving two channels in the space of one! An ultra useful and convenient option.

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Max Input Level
+12 dB Phantom powered, +8 dB using 12 VDC Power Supply.

Input Impedance 1 Meg Ohm

Max Output Level (nominal)
+12 dB 10K Ohm load using Phantom power
+11 dB 600 Ohm load using 12 VDC Power Supply

Output Impedance 680 Ohms Balanced

Output Signal to Noise -100 dB unweighted, -104 dB A weighted

Dynamic Range 112 dB 10K Ohm load using 12 VDC Power Supply

Distortion @100 Hz 0.0025%, @1KHz 0.0026%, @10KHz 0.0033%

Frequency Response 20Hz to 20KHz, ± 0.2 dB

Gain through Unit 6dB (Normal input, Pad switch out)

Power Requirements 48V Phantom power on XLR pins 2 and 3; 12-15V DC from external supply

Pad Switch -20 dB attenuation

Speaker Input
-40 dB attenuation, equivalent to 100:1 decrease in input level.
-60 dB attenuation available when Pad switch also enabled

Input Connectors Insulated jacks

Output Connector
3 pin XLR. Wired Pin 1 Ground, Pin 2 + Hot, Pin 3 - Cold. Audio Ground (Pin 1) lift switch fitted

Construction
All-steel powdercoated chassis, fibreglass PCB