User guide

1. These jacks provide stereo, 24-bit S/PDIF digital input

and output at any sample rate up to 96kHz.

2. These two balanced, quarter-inch jacks serve as the

4pre’s main outputs. You can connect them to a set of

powered studio monitors and then control the volume

from the front panel volume knob. To hear disk tracks in

your audio software on these main outs, assign the disk

tracks (and master fader) to these main outs (

Main Out

1-2

). You can also use the 4pre’s on-board CueMix

mixing to monitor live 4pre inputs here as well.

3. These XLR/TRS combo jacks accept either a mic cable or

a cable with a quarter-inch plug. Use the front panel mic

1-4 encoders to apply up to +60 dB or +22 dB of boost,

respectively, for the mic (XLR) or TRS input. To toggle the

-20 dB pad for the XLR (mic) input, push the correspond-

ing front-panel mic encoder. To toggle 48V phantom

power for the XLR (mic) input, push and hold the corre-

sponding front-panel encoder. The TRS jacks for inputs

3-4 have higher impedance for DI guitar connections.

4. The 4pre’s analog line outputs operate as separate

outputs on balanced +4dB TRS (tip/ring/sleeve)

quarter-inch connectors that can also accept an unbal-

anced plug. They are equipped with 24-bit, 128x

oversampling converters.

5. Connect the 4pre to the computer here via either

FireWire or USB2, using either the standard 1394

FireWire A or USB cable provided with your 4pre. There’s

not much difference, except that FireWire offers bus-

powered operation (without the DC power supply).

Important note: it is best to turn off the 4pre when

plugging in the FireWire cable, as this avoids the

possibility of static discharge, which can harm the

electrical components in the 4pre or your computer

6. This jack accepts any standard 9-18V DC power supply

with either tip-positive or tip-negative polarity.

Quick Reference: 4pre Rear Panel

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