Precision Tools for Audio Professionals

Model Options

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.

(Click on image to enlarge)

More Audiboxes:

Blue DI

USB DI-Plus
(USB Plus Analog)

USB DI-Plus VC
(USB Plus Analog)

USB DI
USB DI-HP
USB DI-VC

USB ULTRA I/O

USB ULTRA VSR BROADCAST

USB DI-Q

SuperSplitter

ISO Balancer
ISO Balancer-VC

ISO Balancer DI

ISO Ultra De-Balancer

ISO Later
ISO Splitter
ISO Combiner
ISO Switcher
ISO Selector

Remote Switcher
Remote Selector

Q Switch

Pro DI
AV DI Plus

DI-Plus RC

DI-Plus2 RC

Pro-DI

A flexible, compact Active Direct box, with normal High Impedance input as well as a separate speaker level input for connection to an aux speaker output on the back of instrument amplifiers.
Heavy duty all-steel chassis finished in attractive matt textured polyurethane, with hardwearing epoxy screen printing and slip resistant rubber pad.
Features include –20 dB Pad and Audio Ground Lift switches, plus Phantom or 12V DC power options.
Security features include Kensington®-type computer lock slot and optional bracket kit for under-table mounting.

Precision engineered Most of the Audibox range share a common footprint and manufacturing platform. Offset lid screws enable close side-by-side mounting of multiple units. Click on image at Right to see larger version

Available in Single Channel or Double Header format

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